4 Runner 4WD L4-2366cc 2.4L SOHC Turbo (22R-TE) (1987)
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2.
Remove adjusting screw locknut, then the four end cover attaching nuts.
3.
Rotate adjusting screw clockwise, and remove end cover.
4.
Remove sector shaft, using a suitable tool.
5.
On Van models, remove dust cover, then the locknut, using tool No. 09617-30040.
6.
On Pickup and 4Runner models, remove worm bearing adjusting screw locknut, using tool No. 09617-60010.
7.
Remove worm bearing adjusting screw, using suitable tool, then remove worm shaft from gear housing. Do not disassemble ball nut from worm
assembly. If found to be defective, replace entire assembly.
Inspection
1.
Check worm and ball nut for wear or damage, then ensure nut rotates downshaft. Replace as necessary.
2.
If necessary to replace worm bearing, on Pickup and 4Runner models, proceed as follows:
a. Remove both side bearings, using tool No. 09950-20016.
b. Install new bearings, using a suitable press.
c. Remove outer race from gear housing, using tool No. 09612-65014.
d. Press new outer race into housing, using tool No. 09550-10012 and a suitable press.
e. Remove outer race from adjusting screw, using tool No. 09612-65014.
f.
Press in new adjusting screw outer race, using tool No. 09550-10012.
3.
Remove adjusting screw oil seal, using a suitable tool, then install new oil seal, using a suitable socket.
4.
Measure sector shaft trust clearance. Clearance should be .0020 inch on Pickup and 4Runner, or .0039 inch on Vans. If clearance is not as
specified, install a suitable thrust washer that will bring clearance to specifications.
5.
On Pickup and 4Runner models, check sector shaft end cover for damage, then the bushing. Measure bushing I.D. I.D. should be 1.2598-1.2608
inch. Replace as necessary.
6.
Check gear housing and bushing I.D. I.D. should be 1.2598-1.2608 inch. Replace gear housing as necessary.
7.
On all models, if necessary to replace gear housing oil seal, remove seal using a suitable tool, then install new oil seal, using tool No. 09550-10012
on Pickup and 4Runner, or 09620-30010 on Vans.
Assembly & Adjustment
Apply a suitable lubricant to oil seal lips, bushings and bearings prior to assembly.
1.
Insert worm shaft into gear housing, Fig. 4.
2.
Apply a suitable sealant to adjusting screw, then install and tighten screw.
3.
Measure bearing preload, in both directions, using a suitable torque wrench. Rotate adjusting screw until preload is 3.0-4.3 inch lbs. on Pickup and
4Runner, or 3.5-5.2 inch lbs. on Vans.
4.
Retain adjusting screw with tool No. 09616-25010, then torque locknut with tool No. 09617-60010 to 177 ft. lbs. Check for proper bearing
preload.
5.
On Van models, install needle roller bearing.
6.
On Pickup and 4Runner, install adjusting screw and thrust washer onto sector shaft, then insert sector into gear housing.
7.
On all models, place ball nut at center of worm shaft and mesh center teeth.
8.
Apply a suitable sealant to new end cover gasket and end cover, then install end cover with new gasket. Loosen adjusting screw as far as possible,
then torque 4 cover bolts to 72 ft. lbs. on Pickup and 4Runner, or 36 ft. lbs. on Van.
9.
Count total shaft rotation, then turn shaft back half number counted. With worm shaft in this position (Neutral), mark relative position between
worm shaft and housing.
10.
Rotate adjusting screw, using a suitable torque wrench, until preload is 6.9-9.5 inch lbs.
11.
Hold adjusting screw using a suitable screwdriver, then torque locknut to 33 ft. lbs. on Pickup and 4Runner, or 20 ft. lbs. on Van.
12.
Align marks on sector shaft with marks on pitman arm, then ensure sector shaft has no backlash within 100 degrees of left and right side of Neutral
position.
13.
Add 400cc of gear oil on Pickup and 4Runner, or 470cc on Van.
Service
DISASSEMBLY
1.
Mount steering gear assembly onto work stand.
2.
Remove solenoid valve, if equipped, and pitman arm, then the adjusting screw locknut and washer.
3.
Remove end cover mounting bolts, then rotate adjusting screw clockwise until cover is removed.
4.
Tap on pitman arm end of cross shaft and remove cross shaft from housing.
5.
Remove valve body retaining bolts, then rotate worm shaft clockwise while holding power piston until valve body O-ring separates from housing.
Remove valve body and power piston assembly.
INSPECTION & ASSEMBLY
1.
Check cross shaft endplay by mounting cross shaft in vise and checking endplay using dial indicator. Endplay should be .0012-.0020 inch (.03-.05