Automatic Transmission - Allison - Component Locator — Transmission — Automatic Trans

Scheme 520

Scheme 520: Torque Converter Housing/Automatic Transmission Case and Associated Components

Callout	Component Name
20	Torque Converter Housing
50	Transmission Case
70	Transmission Fill Tube Plug
71	Transmission Fill Tube Seal (2)
72	Transmission Internal Oil Filter Seal
73	Transmission Internal Oil Filter
74	Transmission Oil Pan Gasket
75	Transmission Oil Pan Magnet
76	Transmission Oil Pan
77	Transmission Oil Pan Drain Plug O-ring
78	Transmission Oil Pan Drain Plug
79	Transmission Oil Pan Bolt, M8 x 1.25 x 20 Flanged Head
81	Low and Reverse Clutch Housing, 2WD

Scheme 521

Scheme 521: Torque Converter Clutch/Converter Housing Assembly

Callout	Component Name
1	Torque Converter
2	Torque Converter Housing
3	Transmission Oil Cooler Pipe Connector (2)
4	Line Pressure Test Hole Plug O-ring
5	Line Pressure Test Hole Plug
6	Transmission External Oil Filter
7	Transmission External Oil Filter Magnet
8	Transmission External Oil Filter Adapter
9	Torque Converter Housing Access Hole Cover
10	Torque Converter Housing Bolt, M10 x 1.5 x 70, Flanged Head (2)
11	Torque Converter Housing Bolt, M10 x 1.5 x 50, Flanged Head (18)
12	Torque Converter Housing Bolt, M10 x 1.5 x 25 (10)

Scheme 522

Scheme 522: Low and Reverse Clutch Piston Housing

Callout	Component Name
1	Low and Reverse Clutch Housing Gasket
2	Low and Reverse Clutch Housing, 2WD
3	Low and Reverse Clutch Housing, 4WD
4	Low and Reverse Clutch Housing Bolt, M10 x 1.5 x 40, Flanged Head (16)
5	Prop Shaft Front Slip Yoke Oil Seal
6	Output Nut, 4WD
7	Rear Shipping Cover, 2WD
8	Rear Shipping Cover, 4WD

Scheme 523

Scheme 523: Automatic Transmission Case

Callout	Component Name
1	Automatic Transmission Case
2	Transmission Case Locating Pin
3	Transmission Vent Assembly
4	Transmission Vent Cap
5	Transmission Vent
6	Vehicle Speed Sensor Bolt, M6 x 1.0 x 13
7	Sensor Shipping Cover
8	Turbine Speed Sensor
9	Vehicle Speed Sensor O-Ring
10	Power Take-Off (PTO) Cover Gasket (2)
11	PTO Cover (2)
12	PTO Cover Bolt, M10 x 1.5 x 20, Flanged Head, Coated (12)
13	Manual Shift Shaft
14	Manual Shift Shaft Seal
15	Manual Shift Shaft Pin
16	Manual Shift Shaft Detent Lever/Internal Mode Switch (IMS) Assembly
17	Park Pawl Assembly
18	Control Valve Body Locating Pin
19	Detent Lever/IMS Bolt
20	Connector Shipping Cover
21	Control Valve Body Assembly
22	Control Valve Body Bolt, M6 x 1.0 x 50, Flanged Head (15)
23	Manual Shift Shaft Detent Spring
24	Manual Shift Shaft Detent Spring Bolt M6 x 1.0 x 12. Flanged Head (2)
25	Transmission Wiring Harness Assembly

Scheme 524

Scheme 524: Torque Converter Housing/Oil Pump Cover Assembly

Callout	Component Name
1	Torque Converter Housing/Oil Pump Cover Assembly
2	Torque Converter Housing Bolt, M10 x 1.5 x 50, Flanged Head (10)
3	Torque Converter Housing Bolt Seal
4	Torque Converter Housing
5	Torque Converter Housing Gasket
6	Oil Pump Cover Assembly

Scheme 525

Scheme 525: Oil Pump Cover/Oil Pump Assembly and Associated Components

Callout	Component Name
1	Oil Pump Cover Module
2	Oil Pump Assembly
3	Torque Converter Housing to Case Channel Plate
4	Seal Ring, End
5	Seal Ring, Middle
6	Oil Pump Cover Assembly
7	Oil Pump Cover Assembly Bolt, M8 x 1.25 x 55, Flanged Head (5)
8	Oil Pump Cover Assembly Thrust Washer
9	Overlap Seal Ring (3)

Scheme 526

Scheme 526: Oil Pump Cover Assembly

Callout	Component Name
1	Oil Pump Cover Assembly
2	Oil Pump Cover Assembly Bearing
3	Oil Pump Cover
4	Bushing, 33.8 mm (1.33 in) ID
5	Stator Shaft
6	Torque Converter Clutch Valve
7	Torque Converter Clutch Valve Spring
8	Torque Converter Clutch Valve Stop
9	Torque Converter Clutch Valve Retainer
10	Torque Converter Clutch Relief Valve
11	Torque Converter Clutch Relief Valve Spring
12	Torque Converter Clutch Relief Valve Retainer
13	Oil Pump Lube Regulator Valve
14	Oil Pump Lube Regulator Valve Spring
15	Oil Pump Lube Regulator Valve Stop
16	Oil Pump Lube Regulator Valve Stop Retainer
17	1-2-3-4 Clutch Backfill Valve
18	1-2-3-4 Clutch Backfill Valve Spring
19	1-2-3-4 Clutch Backfill Valve Stop
20	1-2-3-4 Clutch Backfill Valve Retainer
21	Pressure Regulator Valve
22	Pressure Regulator Valve Spring
23	Pressure Regulator Valve Stop
24	Pressure Regulator Spring Stop Retainer
25	Ball
26	Spring
27	Retainer
28	Plug

Scheme 527

Scheme 527: Oil Pump Assembly

Callout	Component Name
1	Oil Pump Assembly
2	Oil Pump O-Ring Seal
3	Torque Converter Oil Seal
4	Oil Pump Bushing
5	Oil Pump Body
6	Oil Pump Driven Gear
7	Oil Pump Drive Gear
8	Locating Pin
8	Locating Pin
9	Oil Pump Wear Plate

Scheme 528

Scheme 528: Control Valve Body Assembly

Callout	Component Name
1	Control Valve Body Assembly
2	Shift Valve Body Assembly
3	Separator Plate
4	Main Valve Body Assembly
5	Transmission Fluid Pressure (TFP) Switch
6	Main Valve Body Assembly Bolt, M6 x 10 x 50, Flanged Head (23)
7	Transmission Fluid Pressure (TFP) Switch Bolt

Scheme 529

Scheme 529: Shift Valve Body Assembly

Callout	Component Name
1	Shift Valve Body Assembly
2	Retaining Clip
3	Shift Solenoid 2 (SS2) Shift Plug
4	SS2 Shift Spring
5	SS2 Shift Valve
6	Retaining Clip
7	SS3 Shift Plug
8	SS3 Shift Spring
9	SS3 Shift Valve
10	Retaining Clip
11	SS1 Shift Spring
12	SS1 Shift Valve
13	Retaining Clip
14	Control Main Spring
15	Control Main Valve
16	Shift Valve Body
17	Shift Solenoid Retainer
18	SS1
19	Shift Solenoid O-Ring
20	Shift Solenoid O-Ring
21	Modulated Main Pressure (MAIN MOD) Solenoid Retainer Bolt
22	MAIN MOD Solenoid Retainer
23	MAIN MOD Solenoid
24	MAIN MOD Solenoid O-Ring
25	Shift Solenoid Screen
26	Manual Valve Retainer
27	Manual Valve
28	Manual Valve Pin

Scheme 530

Scheme 530: Main Valve Body Assembly

Callout	Component Name
1	Main Valve Body Assembly
2	Retaining Clip
3	Exhaust Pressure Regulator Valve Spring
4	Exhaust Pressure Regulator Valve
5	Retaining Clip
6	Control Relief Spring
7	Control Relief Valve
8	Plug
9	Plug
10	Locating Pin (4) - Main Valve Body to Shift Valve Body
10	Locating Pin (2) - Solenoid Retaining Bracket
11	Pressure Control Solenoid 1 (PCS1) Spring
12	PCS1 Valve
13	PCS1 Valve Retaining Clip
14	PCS1 O-Ring
15	PCS1
16	PCS2 Spring
17	PCS2 Valve
18	PCS2 Valve Retaining Clip
19	PCS2 O-Ring
20	PCS2
21	Accumulator Plug (3)
22	Accumulator Spring (3)
23	PCS1 and PCS2 Retaining Bracket
24	Shift Solenoid (SS) 3 O-Ring
25	SS3 O-Ring
26	SS3
27	SS3 Retainer
28	SS2 O-Ring
29	SS2 O-Ring
30	SS2
31	SS2 Retainer
32	Torque Converter Clutch Pressure Control Solenoid (TCC PCS) Spring
33	TCC PCS Valve
34	TCC PCS Valve Retaining Clip
35	TCC PCS O-Ring
36	TCC PCS O-Ring
37	TCC PCS
38	TCC PCS Retaining Bracket Bolt
39	TCC PCS Retaining Bracket
40	Main Valve Body

Scheme 531

Scheme 531: Torque Converter Housing, 1-2-3-4 and 4-5-6 Clutch Assembly, and 3rd, 5th, and Reverse Clutch Compon

Callout	Component Name
1	Torque Converter Housing/Oil Pump Cover Assembly
2	Torque Converter Housing to Case Gasket
3	1-2-3-4 and 4-5-6 Clutch Assembly
4	Input Sun Gear Thrust Bearing
5	Internal Retaining Ring
6	3rd, 5th, and Reverse Clutch Backing Plate
7	3rd, 5th, and Reverse Clutch Fiber Plate (4)
8	3rd, 5th, and Reverse Clutch Steel Plate (4)
9	3rd, 5th, and Reverse Clutch Piston Return Spring Assembly
10	3rd, 5th, and Reverse Clutch Piston Assembly (Bonded Seals)

Scheme 532

Scheme 532: 1-2-3-4 and 4-5-6 Clutch Assembly

Callout	Component Name
1	1-2-3-4 and 4-5-6 Clutch Assembly
2	Seal Ring (2)
3	Turbine Shaft Assembly
4	Turbine Shaft
5	Bushing, 20 mm (0.8 in) ID
6	1-2-3-4 and 4-5-6 Clutch Piston Housing Assembly
7	1-2-3-4 and 4-5-6 Clutch Bushing
8	1-2-3-4 and 4-5-6 Clutch Housing with Power Take-Off (PTO) Gear
9	1-2-3-4 and 4-5-6 Clutch Housing Assembly
10	Turbine Tone Wheel
11	1-2-3-4 and 4-5-6 Clutch Housing
12	O-ring
13	External Retaining Ring
14	4-5-6 Clutch Piston Inner Seal
15	4-5-6 Clutch Piston Outer Seal
16	4-5-6 Clutch Piston
17	4-5-6 Clutch Return Spring Assembly
18	1-2-3-4 Clutch Piston Outer Seal
19	1-2-3-4 Clutch Piston Housing
20	4-5-6 Clutch Piston Return Spring Retainer
21	1-2-3-4 Clutch Piston Inner Seal
22	1-2-3-4 Clutch Piston Outer Seal
23	1-2-3-4 Clutch Piston
24	1-2-3-4 Clutch Piston Return Spring Assembly
25	1-2-3-4 Clutch Balance Piston
26	1-2-3-4 Clutch Hub Internal Retainer Ring
27	1-2-3-4 Clutch Steel Plate (7)
28	1-2-3-4 Clutch Fiber Plate (7)
29	1-2-3-4 Clutch Selective Backing Plate 5.84-6.04 mm (0.2299-0.2378 in)
30	1-2-3-4 Clutch Backing Plate External Retainer Ring
31	1-2-3-4 Clutch Backing Plate Internal Retainer Ring
32	1-2-3-4 Clutch Hub Thrust Bearing Assembly
33	1-2-3-4 Clutch Hub
34	4-5-6 Clutch Hub Thrust Bearing
35	4-5-6 Clutch Steel Plate (7)
36	4-5-6 Clutch Fiber Plate (6)
37	4-5-6 Clutch Hub
38	Input Sun Gear Thrust Washer
39	Input Sun Gear
40	Input Sun Gear Flange
41	Input Sun Gear External Retaining Ring

Scheme 533

Scheme 533: 2-6 Clutch/Low and Reverse Clutch

Callout	Component Name
1	2-6 Clutch Piston Assembly, Bonded Seals
2	2-6 Clutch Spring Plate Assembly
3	2-6 Clutch Steel Plate (6)
4	2-6 Clutch Fiber Plate (6)
5	2-6 Clutch Backing Plate
6	Internal Retaining Ring
7	Internal Retaining Ring
8	Low and Reverse Clutch Backing Plate
9	Low and Reverse Clutch Fiber Plate (6)
10	Low and Reverse Clutch Steel Plate (5)
11	Low and Reverse Clutch Steel Plate, Selective

Scheme 534

Scheme 534: Input Carrier and Ring Gear Assembly, Intermediate Carrier and Ring Gear Assembly, Main Shaft

Callout	Component Name
1	Input and 3rd, 5th, and Reverse Clutch Ring Gear
2	Input Carrier and Ring Gear Assembly
3	Input Carrier Thrust Bearing
4	Intermediate Carrier and Ring Gear Assembly
5	Intermediate Carrier Thrust Bearing
6	Main Shaft
7	Intermediate Sun Gear
8	Intermediate Sun Gear Spacer
9	Output Sun Gear
10	Output Shaft Thrust Bearing

Scheme 535

Scheme 535: Input Carrier and Ring Gear Assembly

Callout	Component Name
1	Input Carrier and Ring Gear Assembly
2	Input Carrier Thrust Washer
3	Input Carrier Internal Retaining Ring
4	Input Carrier Assembly
5	Intermediate and 2-6 Clutch Ring Gear

Scheme 536

Scheme 536: Input Carrier Assembly

Callout	Component Name
1	Input Carrier Assembly
2	Bushing, 53.0 mm (2.09 in) ID
3	Input Carrier
4	Input Carrier Spindle (4)
5	Input Carrier Thrust Washer (4)
6	Input Carrier Roller Bearing Assembly (8)
7	Input Carrier Pinion Gear (4)
8	Input Carrier Thrust Washer (4)

Scheme 537

Scheme 537: Intermediate Carrier and Ring Gear Assembly

Callout	Component Name
1	Intermediate Carrier and Ring Gear Assembly
2	Intermediate Carrier Internal Retaining Ring
3	Intermediate Carrier Assembly
4	Output Carrier and Low and Reverse Clutch Ring Gear

Scheme 538

Scheme 538: Intermediate Carrier Assembly

Callout	Component Name
1	Intermediate Carrier Assembly
2	Intermediate Carrier
3	Intermediate Carrier Bushing, 36.0 mm (1.42 in) ID
4	Intermediate Carrier Thrust Washer (4)
5	Intermediate Carrier Roller Bearing Assembly (8)
6	Intermediate Carrier Pinion Gear (4)
7	Intermediate Carrier Thrust Washer (4)
8	Intermediate Carrier Spindle (4)

Scheme 539

Scheme 539: Output Carrier Assembly, Output Shaft, Low and Reverse Clutch Return Spring Assembly, Park Pawl

Callout	Component Name
1	Park Pawl Cam Guide
2	Park Pawl Support Pin
3	Park Pawl
4	Park Pawl Return Spring
5	Low and Reverse Clutch Piston Return Spring Assembly
6	Bushing, 20 mm (0.8 in) ID
7	Output Shaft, 2WD
8	Output Shaft, 4WD
9	Output Carrier Assembly

Scheme 540

Scheme 540: Output Carrier Assembly

Callout	Component Name
1	Output Carrier Assembly
2	Output Carrier
3	Output Carrier Thrust Washer (4)
4	Output Carrier Roller Bearing Assembly (8)
5	Output Carrier Pinon Gear (4)
6	Output Carrier Thrust Washer (4)
7	Output Carrier Planetary Spindle (4)
8	Output Carrier Bearing Race

Scheme 541

Scheme 541: Low and Reverse Clutch Housing Assembly, 2WD

Callout	Component Name
1	Low and Reverse Clutch Housing Assembly, 2WD
2	Low and Reverse Clutch Piston
3	Low and Reverse Clutch Outer Piston Seal
4	Low and Reverse Clutch Inner Piston Seal
5	Internal Retaining Ring
6	Output Carrier Support Bearing
7	Output Speed Sensor Reluctor Wheel
8	Low and Reverse Clutch Housing, 2WD
9	Vehicle Speed Sensor Bolt, M6 x 1.0 x 13
10	Sensor Shipping Cover
11	Output Speed Sensor
12	Vehicle Speed Sensor O-Ring
13	Low and Reverse Clutch Selective Spacer
14	Low and Reverse Clutch External Retaining Ring
15	Output Shaft Support Bearing
16	Low and Reverse Clutch Internal Retaining Ring

Scheme 542

Scheme 542: Low and Reverse Clutch Housing Assembly, 4WD

Callout	Component Name
1	Low and Reverse Clutch Housing Assembly, 4WD
2	Low and Reverse Clutch Piston
3	Low and Reverse Clutch Outer Piston Seal
4	Low and Reverse Clutch Inner Piston Seal
5	Internal Retaining Ring
6	Output Carrier Support Bearing
7	Output Shaft Bearing Spacer
8	Low and Reverse Clutch Housing, 4WD
9	Selective Spacer
10	External Retaining Ring
11	Output Shaft Support Bearing
12	Internal Retaining Ring
13	Output shaft Retaining Nut, 4WD

Scheme 543

Scheme 543: Bearing and Bushing Locations

Callout	Component Name
1	Stator Shaft Bushing
2	Oil Pump Bushing
3	1-2-3-4, 4-5-6 Clutch Piston Housing Bushing
4	Oil Pump Cover Assembly Needle Bearing
5	Turbine Shaft Bushing
6	1-2-3-4 Clutch Drive Hub Thrust Bearing
7	4-5-6 Clutch Hub Thrust Bearing
8	Input Carrier Thrust Bearing
9	Intermediate Carrier Bushing
10	Intermediate Carrier Thrust Bearing
11	Intermediate Carrier Thrust Bearing
12	Output Sun Gear Thrust Bearing
13	Output Carrier Needle Bearing
14	Low and Reverse Clutch Housing Ball Bearing
15	Output Shaft Bushing
16	Input Carrier Bushing

Scheme 544

Scheme 544: Seal Locations

Callout	Component Name
1	Stator Shaft Seal Ring
2	Stator Shaft Seal Ring
3	Oil Pump Lip Seal
4	Pump Body O-Ring
5	4-5-6 Clutch Piston Inner Seal
6	4-5-6 Clutch Piston Outer Seal
7	1-2-3-4 Clutch Piston Assembly Outer Seal
8	1-2-3-4 Clutch Piston Inner Seal
9	1-2-3-4 Clutch Piston Outer Seal
10	1-2-3-4 Clutch Assembly Outer Seal
11	1-2-3-4 Clutch Balance Piston
12	Turbine Speed Sensor O-Ring
13	3rd, 5th, and Reverse Clutch Piston Seal Assembly
14	2-6 Clutch Piston Seal Assembly
15	Low and Reverse Clutch Piston Outer Seal
16	Low and Reverse Clutch Piston Outer Seal
17	Drain Plug O-Ring
18	Stator Shaft Overlap Seal Ring (3)
19	Transmission Internal Oil Filter Seal
20	Turbine Shaft Seal, 2

Automatic Transmission - Allison - Component Locator GMC Sierra 2500