Automatic Transmission - 6t40 - Specifications — Buick LaCrosse II (2009-2013)

Fastener Tightening Specifications (Off Vehicle)

Application	Ref No.*	Quantity	Size	Specification
Application	Ref No.*	Quantity	Size	Metric	English
A/Trans Auxiliary Fluid Pump Outlet Bolt (Hybrid Models)	350	4		22 N.m	16 lb ft
A/Trans Auxiliary Fluid Pump Bolt (Hybrid Models)	355	1		22 N.m	16 lb ft
A/Trans Auxiliary Fluid Pump (Pump to Motor) Bolt (Hybrid Models)	370	4		10-12 N.m	89-106 lb in
A/Trans Fluid Pump Bolt to Converter Housing
First Pass	200	7 - 6T30, 8 - 6T40/45/50	M8x33	10 N.m	89 lb in
Final Pass	200	7 - 6T30, 8 - 6T40/45/50	M8x33	45°
A/Trans Fluid Pump Cover Bolt	302	3 - 6T30, 23 - 6T40/45/50	M6x25	12 N.m	106 lb in
A/Trans Fluid Pump Cover Bolt	320	20 - 6T30	M6x21.5	12 N.m	106 lb in
Control Solenoid Valve Assembly (w/TCM and Body) to Case Bolt	4	12	M6x97	10 N.m	89 lb in
Control Solenoid Valve Assembly (w/TCM and Body) to Case Bolt	6	3	M5x40.5	7 N.m	62 lb in
Control Valve Body Assembly (Complete) Bolt	400	1	M5x40.5	7 N.m	62 lb in
Control Valve Body to Case Bolt	9	2	M6x53	11 N.m	97 lb in
Control Valve Body to Case Bolt	10	9	M6x60	11 N.m	97 lb in
Control Valve Body Cover Bolt	1	13	M6x30	12 N.m	106 lb in
Drain Plug	64	1	1/8"-27 NPTF	12 N.m	106 lb in
Fluid Level Hole Plug	63	1	1/8"-27 NPTF	12 N.m	106 lb in
Fluid Pressure Test Hole Plug	51	1	1/8"-27 NPTF	12 N.m	106 lb in
Front Differential Carrier Baffle Bolt - Converter Housing	204	2	M6x25	12 N.m	106 lb in
Front Differential Carrier Baffle Bolt - Case	61	2	M6x18.5 - 6T30, M6x16 - 6T40/45/50	12 N.m	106 lb in
Input Shaft Support Bolt	57	3	M6x50	12 N.m	106 lb in
Input Speed Sensor Bolt	21	1	M6x23	9 N.m	80 lb in
Manual Shift Detent Spring	17	1	M6x16	12 N.m	106 lb in
Output Speed Sensor Bolt	15	1	M6x18	9 N.m	80 lb in
Torque Converter and Differential Housing Bolt
First Pass	27	14 - 6T30, 15 - 6T40/45/50	M8x30	10 N.m	89 lb in
Final Pass	27	14 - 6T30, 15 - 6T40/45/50	M8x30	50°
*Reference number refers to the component callout number in Disassembled Views

Fastener Tightening Specifications (Off Vehicle)

Fastener Tightening Specifications (On Vehicle)

Application	Specification
Application	Metric	English
A/Trans Control Bolt	9	80 lb in
A/Trans Flex Plate Bolt	60	45 lb ft
Rear Trans Brace Bolt - Inboard	50	37 lb ft
Rear Trans Brace Bolt - Outboard	100	74 lb ft
Torque Converter to Flywheel Bolt	60	45 lb ft
Transmission Bolt (1, 2, 3) - 6T40	75	55 lb ft
Transmission Bolt (4, 5) - 6T40	50	37 lb ft
Transmission Bolt (1, 2, 3, 4) - 6T45	75	55 lb ft
Transmission Bolt (5) - 6T45	50	37 lb ft
Transmission Fluid Cooler Outlet Pipe Nut	22	17 lb ft
Transmission Fluid Cooler Pipe Inlet Nut	22	17 lb ft
Transmission Front Mount Through Bolt	100	74 lb ft
Transmission Front Mount to Transmission Bolts	62	46 lb ft
Transmission Mount Bolt - Left Side to Frame Rail	22	16 lb ft
Transmission Mount Bolt - Left Side to Transmission	50 + 60-75°	37 lb ft + 60-75°
Transmission Mount Nut - Left Side to Body	22	16 lb ft
Transmission Rear Mount Through Bolt	105	747 lb ft
Transmission Rear Mount to Cradle	100 + 120-130°	74 lb ft + 120-130°
Transmission Rear Mount to Transmission	100	74 lb ft
Transmission Range Selector Cable Bracket Bolt	18	14 lb ft
Transmission Range Selector Lever Nut	20	15 lb ft

Fastener Tightening Specifications (On Vehicle)

Transmission General Specifications (6T40/6T45/6T50)

Name	6T40/6T45/6T50
RPO Codes	MH8, MH7, MHK, MHH, MHC, MHJ
Production Location	Korea/China/Mexico/Toledo
Transmission Drive	Front Wheel Drive
Reverse Gear Ratio	2.94
1st Gear Ratio	4.584
2nd Gear Ratio	2.964
3rd Gear Ratio	1.912
4th Gear Ratio	1.446
5th Gear Ratio	1.000
6th Gear Ratio	0.746
Effective Final Drive Gear Ratio	2.64/2.89/3.23/3.53/3.87
Torque Converter Size- Diameter of Torque Converter Turbine	236 mm
Pressure Taps Line	Pressure
Transmission Fluid Type	DEXRON VI®
Transmission Fluid Capacity	8.0 L/8.5 Quarts
Transmission Type: 6	Six Forward Gears
Transmission Type: T	Transverse Mount
Transmission Type: 40/45/50	Product Series
Position Quadrant	P, R, N, D, * *(Refer to the applicable owner's manual)
Case Material	Die Cast Aluminum
Transmission Net Weight	81/86 kg (178/190 lbs)
Maximum Trailer Towing Capacity	N/A
Maximum Gross Vehicle Weight (GVW)	6T40 - 2000 kg (4, 409 lbs) 6T45 - 2200 kg (4, 850 lbs) 6T50 - 2500 kg (5, 511 lbs)

Transmission General Specifications (6T40/6T45/6T50)

Adhesives, Fluids, Lubricants, and Sealers

Application	Type of Material	GM Part Number
Application	Type of Material	United States	Canada
Automatic Transmission Fluid	DEXRON®VI	88861037	19264717
Torque Converter Bolts	Threadlock	12345382	10953489

Adhesives, Fluids, Lubricants, and Sealers

Fluid Capacity Specifications (6T40/45/50)

Application	Specification
Application	Metric	English
Valve Body Cover Removal - Approximate Capacity	5.0-7.0 liters	5.3-7.4 quarts
Fluid Change - Drain Plug - Approximate Capacity	4.0-6.0 liters	4.2- 6.3 quarts
Overhaul - Approximate Capacity	8.0-8.5 liters	8.5-9.0 quarts

Fluid Capacity Specifications (6T40/45/50)

Fluid Pump Selective Specifications

Fluid Pump Body Pocket Depth		Fluid Pump Gear Thickness
Metric	English	Metric	English
12.617-12.625 mm	0.4967-0.4970 in	12.580-12.588 mm	0.4952-0.4955 in
12.626-12.636 mm	0.4970-0.4974 in	12.589-12.599 mm	0.4956-0.4960 in
12.637-12.645 mm	0.4975-0.4978 in	12.600-12.608 mm	0.4960-0.4963 in

Fluid Pump Selective Specifications

Clutch & Band Application

Range	Park	Reverse	Neutral	Drive
Range	Park	Reverse	Neutral	1st Braking	1st	2nd	3rd	4th	5th	6th
1-2-3-4 Clutch				Applied	Applied	Applied	Applied	Applied
3-5 Reverse Clutch		Applied					Applied		Applied
4-5-6 Clutch								Applied	Applied	Applied
2-6 Clutch						Applied				Applied
Low and Reverse Clutch	Applied*	Applied	Applied*	Applied
Low Clutch Assembly (OWL)				Holding	Holding
* = Applied with NO load

Range Reference

Shift Solenoid Valve State and Gear Ratio

Gear	Shift SOL 1	1-2-3-4 CL PC SOL 5 N.L.	2-6 CL PC SOL 4 N.L.	3-5 REV CL PC SOL 2 N.H.	LOW REV 4-5-6 CL PC SOL 3 N.H.	Gear Ratio
Park	ON	OFF	OFF	OFF	ON
Reverse	ON	OFF	OFF	ON	ON	2.940
Neutral	ON	OFF	OFF	OFF	ON
1st Braking	ON	ON	OFF	OFF	ON	4.584
1st	OFF	ON	OFF	OFF	OFF	4.584
2nd	OFF	ON	ON	OFF	OFF	2.964
3rd	OFF	ON	OFF	ON	OFF	1.912
4th	OFF	ON	OFF	OFF	ON	1.446
5th	OFF	OFF	OFF	ON	ON	1.000
6th	OFF	OFF	ON	OFF	ON	0.746
Effective Final Drive Ratio - 6T40/45 - 3.17/3.87 For shift solenoid 1, "ON" = Solenoid Energized (Pressurized) "OFF" = Solenoid De-energized (No Pressure). For pressure control solenoids, "ON" = Pressurized, "OFF" = No Pressure

Shift Solenoid Valve State and Gear Ratio

Transmission Fluid Pressure Switch Logic

Gear	TFP Switch States
Gear	TFP SW1	*TFP SW3	TFP SW4	TFP SW5
Park	Low	Low	Low	Low
Reverse	Low	Low	Low	Low
Neutral	Low	Low	Low	Low
Drive 1st - Engine Braking	Low	High	Low	Low
Drive 1st	High	High	Low	High
Drive 2nd	High	Low	Low	High
Drive 3rd	Low	High	Low	High
Drive 4th	High	High	Low	Low
Drive 5th	Low	High	High	Low
Drive 6th	High	Low	High	Low
High = 12V (Switch Open or Pressurized) Low = 0V (Switch Closed or No Pressure) Note: All TFP switches are normally closed (NC) *TFP switch 2 does not exist

Transmission Fluid Pressure Switch Logic

Transmission Internal Mode Switch Logic

Gear Selector Position	Signal A	Signal B	Signal C	Signal P
Park	LOW	HI	HI	LOW
Park/Reverse	LOW	LOW	HI	LOW
Reverse	LOW	LOW	HI	HI
Reverse/Neutral	HI	LOW	HI	HI
Neutral	HI	LOW	HI	LOW
Neutral/Drive 6	HI	LOW	LOW	LOW
Drive 6	HI	LOW	LOW	HI
Drive 6/Drive 4	LOW	LOW	LOW	HI
Drive 4	LOW	LOW	LOW	LOW
Drive 4/Drive 3	LOW	HI	LOW	LOW
Drive 3	LOW	HI	LOW	HI
Drive 3/Drive 2	HI	HI	LOW	HI
Drive 2	HI	HI	LOW	LOW
Open	HI	HI	HI	HI
Invalid	HI	HI	HI	LOW
Invalid	LOW	HI	HI	HI
HI = Ignition voltage LOW = 0 volts

Transmission Internal Mode Switch Logic

Solenoid Valve Pressure (Gen 1)

Requested Pressure (kPa)	Actual Pressure
Requested Pressure (kPa)	Metric	English
None	345-550 kPa	50-80 psi
200	690-900 kPa	100-130 psi
400	1100-1310 kPa	160-190 psi
600	1520-1725 kPa	220-250 psi
800	1860-2275 kPa	270-330 psi
1000	1860-2275 kPa	270-330 psi
1200	1860-2275 kPa	270-330 psi
1400	1860-2275 kPa	270-330 psi
1600	1860-2275 kPa	270-330 psi
1800	1860-2275 kPa	270-330 psi
2000	1860-2275 kPa	270-330 psi

Line PC Solenoid Valve Pressure

Scheme 121

Scheme 121: A/Trans Seal Kit (Gen 1& 2) 24251028

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
20	3	A/Trans Input Speed Sensor Assembly O-Ring Seal

A/Trans Seal Kit (Gen 1& 2) 24251028

Scheme 122

Scheme 122: Front Wheel Seal Kit (Gen 1& 2) 19258415

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
209	1	Front Wheel Drive Shaft Oil Seal Assembly

Front Wheel Seal Kit (Gen 1& 2) 19258415

Scheme 123

Scheme 123: Front Wheel Seal Kit (Gen 1& 2) 19258416

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
65	1	Drive Shaft Oil Seal Assembly

Front Wheel Seal Kit (Gen 1& 2) 19258416

Scheme 124

Scheme 124: A/Trans Seal Kit (Gen 1) 24251353 (1 of 2)

Callout	Quantity	Component Name
3	1	Control Valve Body Cover Gasket
24	1	Torque Converter Housing Gasket
58	4	3-5-Reverse and 4-5-6 Clutch Fluid Seal Ring
65	1	Drive Shaft Oil Seal Assembly
202	1	Torque Converter and Differential Housing Seal
209	1	Front Wheel Drive Shaft Oil Seal Assembly
301	1	Torque Converter Fluid Seal Assembly
319	1	Torque Converter Fluid Seal Assembly
504	1	3-5-Reverse Clutch Piston Inner Seal
505	1	3-5-Reverse Clutch Piston Inner Seal
506	1	3-5-Reverse Clutch Piston Dam Seal
518	1	4-5-6 Clutch Piston Outer Seal
519	1	4-5-6 Clutch Piston Outer Seal
521	1	4-5-6 Clutch Piston Inner Seal

A/Trans Seal Kit (Gen 1) 24251353 (1 of 2)

Scheme 125

Scheme 125: A/Trans Seal Kit (Gen 1) 24251353 (2 of 2)

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
5	1	Control Valve Body Cover Hole Seal
8	1	Control Valve Body Filter Plate Assembly
12	1	Control Valve Body Spacer Plate Assembly
14	1	A/Trans Fluid Level Control Valve Gasket
20	3	A/Trans Input Speed Sensor Assembly O-Ring Seal
25	1	A/Trans Fluid Pump Seal Assembly
59	1	Drive Link Lube Fluid Seal
67	1	1-2-3-4 and Low Reverse Clutch Fluid Passage Seal
203	1	A/Trans Fluid Filter Assembly
403	1	Channel Plate to Valve Body Spacer Plate Assembly
604	1	Manual Shift Shaft Seal
605	1	Park Pawl Actuator Guide Seal

A/Trans Seal Kit (Gen 1) 24251353 (2 of 2)

Scheme 126

Scheme 126: A/Trans Seal Kit (Gen 2) 24260603 (1 of 2)

Callout	Quantity	Component Name
3	1	Control Valve Body Cover Gasket
24	1	Torque Converter Housing Gasket
58	3	3-5-Reverse and 4-5-6 Clutch Fluid Seal Ring
65	1	Drive Shaft Oil Seal Assembly
202	1	Torque Converter and Differential Housing Seal
209	1	Front Wheel Drive Shaft Oil Seal Assembly
301	1	Torque Converter Fluid Seal Assembly
319	1	Torque Converter Fluid Seal Assembly
504	1	3-5-Reverse Clutch Piston Inner Seal
505	1	3-5-Reverse Clutch Piston Inner Seal
506	1	3-5-Reverse Clutch Piston Dam Seal
518	1	4-5-6 Clutch Piston Outer Seal
519	1	4-5-6 Clutch Piston Outer Seal
521	1	4-5-6 Clutch Piston Inner Seal
524	1	4-5-6 Clutch Piston Fluid Dam Retainer Ring

A/Trans Seal Kit (Gen 2) 24260603 (1 of 2)

Scheme 127

Scheme 127: A/Trans Seal Kit (Gen 2) 24260603 (2 of 2)

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
5	1	Control Valve Body Cover Hole Seal
8	1	Control Valve Body Filter Plate Assembly
12	1	Control Valve Body Spacer Plate Assembly
14	1	A/Trans Fluid Level Control Valve Gasket
20	3	A/Trans Input Speed Sensor Assembly O-Ring Seal
23	1	Fill Cap Seal
25	1	A/Trans Fluid Pump Seal Assembly
59	1	Drive Link Lube Fluid Seal
67	1	1-2-3-4 and Low Reverse Clutch Fluid Passage Seal
203	1	A/Trans Fluid Filter Assembly
403	1	Channel Plate to Valve Body Spacer Plate Assembly
407	5	Actuator Feed Accumulator Spring
408	5	Actuator Feed Accumulator Piston
604	1	Manual Shift Shaft Seal
605	1	Park Pawl Actuator Guide Seal

A/Trans Seal Kit (Gen 2) 24260603 (2 of 2)

Scheme 128

Scheme 128: Transmission Kit (Gen 1) 24260701

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
523	1	4-5-6 Clutch Piston Fluid Dam Assembly
524	1	4-5-6 Clutch Piston Fluid Dam Retainer Ring
531	1	Reaction Carrier Hub Assembly

Transmission Kit (Gen 1) 24260701

Scheme 129

Scheme 129: Control Valve Body Kit (Gen 1) 24248473

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
3	1	Control Valve Body Cover Gasket
5	1	Control Valve Body Cover Hole Seal
8	1	Control Valve Body Filter Plate Assembly
12	1	Control Valve Body Spacer Plate Assembly
14	1	A/Trans Fluid Level Control Valve Gasket
67	2	1-2-3-4 and Low Reverse Clutch Fluid Passage Seal
403	1	Channel Plate to Valve Body Spacer Plate Assembly

Control Valve Body Kit (Gen 1) 24248473

Scheme 130

Scheme 130: Control Valve Body Kit (Gen 2) 24260702

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
3	1	Control Valve Body Cover Gasket
5	1	Control Valve Body Cover Hole Seal
8	1	Control Valve Body Filter Plate Assembly
12	1	Control Valve Body Spacer Plate Assembly
14	1	A/Trans Fluid Level Control Valve Gasket
67	2	1-2-3-4 and Low Reverse Clutch Fluid Passage Seal
403	1	Channel Plate to Valve Body Spacer Plate Assembly
407	5	Actuator Feed Accumulator Spring
408	5	Actuator Feed Accumulator Piston

Control Valve Body Kit (Gen 2) 24260702

Scheme 131

Scheme 131: Clutch Plate Package (Gen 1) 24249460

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
509	3	3-5 Reverse Clutch (w/Friction Material) Plate Assembly
527	4	4-5-6 Clutch (w/Friction Material) Plate Assembly
542	2	2-6 Clutch (w/Friction Material) Plate Assembly
545	3	Low and Reverse Clutch (w/Friction Material) Plate Assembly
559	2	1-2-3-4 Clutch (w/Friction Material) Plate Assembly

Clutch Plate Package (Gen 1) 24249460

Scheme 132

Scheme 132: Clutch Plate Package (Gen 2) 24260695

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
509	3	3-5 Reverse Clutch (w/Friction Material) Plate Assembly
527	5	4-5-6 Clutch (w/Friction Material) Plate Assembly
542	2	2-6 Clutch (w/Friction Material) Plate Assembly
545	3	Low and Reverse Clutch (w/Friction Material) Plate Assembly
559	2	1-2-3-4 Clutch (w/Friction Material) Plate Assembly

Clutch Plate Package (Gen 2) 24260695

Scheme 133

Scheme 133: 4-5-6 Plate Assembly (Gen 2) 24260700

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
527	5	4-5-6 Clutch (w/Friction Material) Plate Assembly

4-5-6 Plate Assembly (Gen 2) 24260700

Scheme 134

Scheme 134: Low and Reverse Plate Assembly (Gen 2) 24260696

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
545	3	Low and Reverse Clutch (w/Friction Material) Plate Assembly

Low and Reverse Plate Assembly (Gen 2) 24260696

Scheme 135

Scheme 135: 3-5 Reverse Plate Assembly (Gen 2) 24260697

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
509	3	3-5 Reverse Clutch (w/Friction Material) Plate Assembly

3-5 Reverse Plate Assembly (Gen 2) 24260697

Scheme 136

Scheme 136: 2-6 Plate Assembly (Gen 2) 24260698

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
542	2	2-6 Clutch (w/Friction Material) Plate Assembly

2-6 Plate Assembly (Gen 2) 24260698

Scheme 137

Scheme 137: 1-2-3-4 Plate Assembly (Gen 2) 24260699

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
559	2	1-2-3-4 Clutch (w/Friction Material) Plate Assembly

1-2-3-4 Plate Assembly (Gen 2) 24260699

Scheme 138

Scheme 138: A/Trans Seal Kit (Gen 2) 24260704

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
352	2	A/Trans Auxiliary Fluid Pump Outlet Pipe Seal Assembly
356	1	Pressure Regulator Valve Spring Spacer
361	1	A/Trans Auxiliary Fluid Pump Gasket
362	1	A/Trans Auxiliary Fluid Pump Seal
363	1	A/Trans Auxiliary Fluid Pump Cover Seal
367	1	A/Trans Auxiliary Fluid Pump Motor Cover Seal- O-Ring
371	1	A/Trans Auxiliary Fluid Inlet Pump Seal
373	1	A/Trans Fluid Trough Check Ball

A/Trans Seal Kit (Gen 2) 24260704

Scheme 139

Scheme 139: A/Trans Auxiliary Seal Kit (Gen 2) 24260705

Note. Callouts with boxes around them indicate part is included in the service kit. Callouts without boxes are shown for relationship purposes only.

Callout	Quantity	Component Name
352	2	A/Trans Auxiliary Fluid Pump Outlet Pipe Seal Assembly
356	1	Pressure Regulator Valve Spring Spacer
361	1	A/Trans Auxiliary Fluid Pump Gasket
362	1	A/Trans Auxiliary Fluid Pump Seal
363	1	A/Trans Auxiliary Fluid Pump Cover Seal
367	1	A/Trans Auxiliary Fluid Pump Motor Cover Seal- O-Ring

A/Trans Auxiliary Seal Kit (Gen 2) 24260705

Automatic Transmission - 6t40 - Specifications Buick LaCrosse II

Fastener Tightening Specifications (Off Vehicle)

Fastener Tightening Specifications (On Vehicle)

Transmission General Specifications (6T40/6T45/6T50)

Adhesives, Fluids, Lubricants, and Sealers

Fluid Capacity Specifications (6T40/45/50)

Fluid Pump Selective Specifications

Clutch & Band Application

Shift Solenoid Valve State and Gear Ratio

Transmission Fluid Pressure Switch Logic

Transmission Internal Mode Switch Logic

Solenoid Valve Pressure (Gen 1)

Scheme 121

Scheme 122

Scheme 123

Scheme 124

Scheme 125

Scheme 126

Scheme 127

Scheme 128

Scheme 129

Scheme 130

Scheme 131

Scheme 132

Scheme 133

Scheme 134

Scheme 135

Scheme 136

Scheme 137

Scheme 138

Scheme 139

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