Section of the crankcase of the steering mechanism
1 - plate of the adjusting screw of the bipod shaft; 2 - adjusting screw of the bipod shaft; 3 - adjusting screw nut; 4 - oil filler plug; 5 - cover of the crankcase of the mechanism; 6 - worm; 7 - crankcase of the steering mechanism; 8 - bipod; 9 - nut for fastening the bipod to the shaft; 10 - spring washer of the bipod fastening nut; 11 - bipod shaft seal; 12 - bronze bushing of the bipod shaft; 13 - bipod shaft; 14 - bipod shaft roller; 15 - worm shaft; 16 - upper ball bearing; 17 - lower ball bearing; 18 - adjusting shims; 19 - the lower cover of the worm bearing; 20 - roller axis; 21 - needle bearing; 22 - worm shaft seal
1. Set the front wheels to the straight-ahead position and, turning the steering wheel in either direction, check if the distance between the end of the crankcase does not change 7 (see fig. Section of the crankcase of the steering mechanism) steering gear and shaft tip. A change in distance is a sign of clearance in the worm bearings.
2. To adjust the clearance in the worm bearings, turn the steering wheel to the left by 1–1.5 turns, unscrew the bolts securing the bottom cover 19 and drain the oil from the steering gear housing.
3. Remove the bottom cover, remove one of the shims 18 or replace it with a thinner one.
Attention! Shims are supplied as spares in 0.10 and 0.15 mm thicknesses.
4. After securing the bottom cover, check again if there is any axial movement of the worm in the bearings. If there is no movement, pour 0.215 liters of transmission oil TAD-17i into the crankcase of the steering mechanism.
5. Check the steering force by placing the front wheels on a smooth tile. It should not exceed 245 N (25 kgf).