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Contents Section: Frames, Subframes & Crossmembers All sections

Full Frame and Body Mounting Ford Explorer Sport Trac II

Frames, Subframes & Crossmembers 10 illustrations ~941 words

Material

ItemSpecificationFill Capacity
High Temperature Anti-Corrosion Coating PM-13-A
Low Temperature Anti-Corrosion Coating PM-12-A

Material

TORQUE SPECIFICATIONS

DescriptionNm
1B crossmember nuts103
Front end sheet metal support bolt55
Front end sheet metal support nut55
Heat shield bolts18
No. 1 body support bolt90
No. 1 body support nuts103
No. 2 body support bolt90
No. 3 body support bolt90
No. 3 body support nuts103
No. 4 body support bolt (Explorer/Mountaineer only)90
Spare tire heat shield bolt15
Trailer hitch assembly bolts - inboard (service hitch only)235
Trailer hitch assembly bolts - outboard (service hitch only)235
Transfer case skid plate bolt15
Transmission crossmember lower bolts80
Transmission crossmember upper nuts143
Transmission mount nuts90

TORQUE SPECIFICATIONS

The frame consists of 2 steel-channel rails, 10 crossmembers for Explorer Sport Trac or 8 crossmembers for Explorer/Mountaineer including a front crossmember, transmission support crossmember and a rear crossmember (trailer hitch). New side rails and welded crossmembers, including the trailer hitch, are not installed separately. A front frame rail repair kit is available if the front rail is to be repaired and a rear crossmember (hitch) repair kit is available if the rear crossmember or rail is to be repaired.

The 1B crossmember and transmission crossmember are included in assembly to the frame but can be serviced separately. For any frame repair, refer to BODY REPAIRS article.

Frame-Mounted Heat Shields

The frame-mounted heat shields are attached to the top of the frame and crossmembers with bolts. The body must be lifted off the frame enough for access to the bolts that attach the heat shields to the top of the frame.

Note. Portions of the frame are removed from this drawing to show the location of the inserts.

Scheme 7

Scheme 7: Frame-Mounted Heat Shields
Scheme 7: Frame-Mounted Heat Shields
ItemPart NumberDescription
1Exterior frame reinforcement
2Fore reinforcement
3Aft reinforcement

Scheme 8

Scheme 8
Scheme 8
ItemPart NumberDescription
1Exterior frame reinforcement
2Fore reinforcement
3Aft reinforcement
4External reinforcement

The purpose of these inserts is to enhance the structural rigidity of the frame in this area. Inserts cannot be repaired or installed new.

CAUTIONWhen removing upper body mounts, enough adjacent body mount support bolts and nuts must be removed to prevent damage occurring to the vehicle.

Note. Body mounts must be held with a wrench on the bottom while loosening the bolt from the top.

Note. Do not reuse body support mounting fasteners. New fasteners must be installed for each fastener that has been removed or loosened.

Note. No lubricants of any kind are to be used during body mount support installation.

Scheme 9

Scheme 9
Scheme 9
ItemPart NumberDescription
1W710231Body support bolt
200155AFront end sheet metal body support mount - lower
300154AFront end sheet metal body support mount - upper
4W710733Body support washer
5N621946Body support nut

Scheme 10

Scheme 10
Scheme 10
ItemPart NumberDescription
1W710725Body support bolt
2W710733Body support washer
3N800937Body support nut (2 required)
400154BBody support mount (Explorer/Mountaineer)
400154CBody support mount (Explorer Sport Trac)

Scheme 11

Scheme 11
Scheme 11
ItemPart NumberDescription
1W711547Body support bolt
2W710733Body support washer
300154CBody support mount - upper
400154BBody support mount - lower

Note. Explorer/Mountaineer only.

Scheme 12

Scheme 12
Scheme 12
ItemPart NumberDescription
1W711315Body support bolt
2W710733Body support washer
300154EBody support mount - upper
400155CBody support mount - lower

Note. Explorer Sport Trac only.

Scheme 13

Scheme 13
Scheme 13
ItemPart NumberDescription
1W710725Body support bolt
2W710733Body support washer
3N800937Body support nut (2 required)
400154Body support mount

Note. Explorer/Mountaineer only.

Scheme 14

Scheme 14
Scheme 14
ItemPart NumberDescription
1W711315Body support bolt
2W710733Body support washer
300154DBody support mount - upper
400155CBody support mount - lower

Frame Drilling

  1. Holes that would weaken the frame sidemember should not be drilled in the frame.
  2. Holes are not to be drilled in the sidemember's top or bottom flange.
  3. Holes to mount brackets, out-riggers and supports may be drilled in the vertical frame side rail web with the following restrictions: Material between edge of hole and inside of upper or lower flange must not be less than 38.1 mm (1.50 in) for low carbon steel (36,000 psi yield). The minimum edge distance between any 2 holes up to 15.74 mm (0.625 in) diameter must be 25.4 mm (1.00 in). For larger than 15.74 mm (0.625 in) diameter holes, the minimum edge distance must be 1.5 times the diameter of the largest hole. No holes will be allowed to exceed 19.05 mm (0.75 in) in diameter. Avoid close vertical succession of fasteners. All attaching fasteners, including flat washers, must be of high strength steel (Grade 8).

Scheme 15

Scheme 15: Crossmember - 1B
Scheme 15: Crossmember - 1B
ItemPart NumberDescription
1W7098341B crossmember bolt (4 required)
2W5201141B crossmember nut (4 required)
35E1381B crossmember

REMOVAL AND INSTALLATION

  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
  2. Remove the 4 crossmember bolts.
  3. Remove the 4 crossmember nuts. To install, tighten to 103 N.m (76 lb-ft).
  4. Remove the 1B crossmember.
  5. To install, reverse the removal procedure.

Trailer Hitch

ItemSpecification
High Temperature Anti-Corrosion Coating PM-13-A
Low Temperature Anti-Corrosion Coating PM-12-A

Material

Note. The factory rear trailer hitch crossmember is welded to the frame. The service replacement rear trailer hitch crossmember will be bolted to the frame.

All vehicles

  1. Remove the spare tire.
  2. Remove the rear bumper cover. For additional information, refer to «BUMPERS»(/ford/explorer-sport-trac/ii-2006-2010/remont/exterior-body-panels/#bumper-system) article.
  3. Disconnect the trailer wiring harness.
  4. Cut the rear rails vertically at least 10-18 mm (0.39-0.70 in) behind the rear body/box mount leg. Use Explorer/Mountaineer template No. 1.
  5. Drill 18 mm (0.688 in) diameter holes for the inboard and outboard attachments to each frame rail. For the inboard side use Explorer/Mountaineer template No. 2. For the outboard side use Explorer/Mountaineer template No. 3.
  6. Cut the rear rails vertically at least 10-18 mm (0.39-0.70 in) behind the rear body/box mount leg. Use Sport Trac template No. 1.
  7. Drill 18 mm (0.688 in) diameter holes for the inboard and outboard attachments to each frame rail. Use Sport Trac Template No. 2. Use Sport Trac template No. 3.
  8. De-burr the cut edges of the frame rail and the drilled holes.
  9. Clean the inner and outer surfaces of the frame rails, making sure all mating surfaces are free of foreign material.
  10. Apply 3 even coats of the specified anti-corrosion coating onto the inner and outer surfaces of the frame rails where bare metal is present.
  11. Insert the new trailer hitch cross member assembly into the frame.
  12. Hand start all 8 bolts into the weld nuts in the hitch brackets.
  13. Tighten the inboard bolts. Tighten to 235 Nm (174 lb-ft).
  14. Tighten the outboard bolts. Tighten to 235 Nm (174 lb-ft).
  15. Install the trailer wiring harness.
  16. Install the rear bumper cover. For additional information, refer to «BUMPERS»(/ford/explorer-sport-trac/ii-2006-2010/remont/exterior-body-panels/#bumper-system) article.
  17. Install the spare tire.

Transmission Support Crossmember

Note. Explorer/Mountaineer shown, Explorer Sport Trac similar.

Scheme 16

Scheme 16: Transmission Support Crossmember
Scheme 16: Transmission Support Crossmember
ItemPart NumberDescription
1W707079Transfer case skid plate bolt (4 required)
27E063Transfer case skid plate
3W710617Heat shield bolt (3 required)
4N621945Transmission mount nut (2 required)
5W705049Transmission crossmember upper bolt (2 required)
6W520114Transmission crossmember upper nut (2 required)
7W506442Transmission crossmember lower bolt (6 required)
85025Transmission crossmember
  1. With the vehicle in NEUTRAL, position it on a hoist. For additional information, refer to «JACKING AND LIFTING»(/ford/explorer-sport-trac/ii-2006-2010/remont/hoistjack/#jacking-and-lifting) article.
  2. Remove the 4 transfer case skid plate bolts and remove the transfer case skid plate. To install, tighten to 15 N.m (11 lb-ft).
  3. Remove the heat shield bolt from the RH heat shield. To install, tighten to 18 N.m (13 lb-ft).
  4. Remove the heat shield bolt from the LH heat shield. To install, tighten to 18 N.m (13 lb-ft).
  5. Support the transmission with a suitable jack.
  6. Remove the 2 transmission mount nuts. To install, tighten to 90 N.m (66 lb-ft).
  7. Remove the 6 transmission crossmember lower bolts. To install, tighten to 80 N.m (59 lb-ft).
  8. Remove the 2 upper nuts and 2 bolts from the transmission crossmember. To install, tighten to 143 N.m (105 lb-ft).
  9. Remove the transmission crossmember.
  10. To install, reverse the removal procedure.

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