(5) Apply grease to lower collar (8) and insert it to the lower of roller bearing. After setting the bearing so that its upper surface is horizontal, tighten the all the bolt (19). After tightening, confirm that tapered roller bearing moves lightly. (bearing preload : 0.6 ~ 0.9 kgf ㆍ m) ; if does not move smoothly, add shims (4, 5). ㆍ Tightening Torque : 9.8~15.8 kgf ㆍ m (70.9~114 lbf ㆍ ft ) ㆍ Apply loctite #243. (6) (7) Move the front frame and join it to the rear frame so that match the pin hole at the center. (8) Apply grease to pin (11), bushing (16) and insert it into tapered roller bearing (1).
(9) Apply grease to lower collar (9) and insert it to the lower of roller bearing through rear frame (28). (10) Apply grease to pin (7) and insert it into tapered roller bearing (1). (11) Before tightening bolt (6), adjust shims (14, 15) in order to control the clearance between the plate (21) and rear frame (28). ㆍ Adjustment method of clearance B Adjustment method of clearance B Install pin (7) and plate (21) without shim (14,15, 26). Install four of bolt (6) so that each bolt is separated by 90 degrees. ㆍ Tighting torque : 0.8~1.0 kgf ㆍ m (5.8~7.2 lbf ㆍ ft ) Adjust shims in order to control the clearance B. ㆍ Clearance B : 0.1~0.2 mm ㆍ Shim thickness :
0.1 mm , 0.5 mm , 2.0 mm ① ② (12) Tighten the all the bolts (6). ㆍ Tightening Torque : 9.8~15.8 kgf ㆍ m (70.9~114 lbf ㆍ ft ) ㆍ Apply loctite #243.
TROUBLESHOOTING TROUBLESHOOTING 5) 5) 5-46 Trouble Probable cause Remed Shock is felt when steering Capscrew for fixing steering valve is loose Retighten Faulty center pivot pin mounting bolts Retighten Center pivot pins have worn out Readjust or replace Faulty hydraulic system See hydraulic system Shock is felt when moving backward or forward Fault fixing of connecting capscrews Retighten Center pins have worn out Readjust or replace Bearings of support unit have worn out Retighten Drive shaft damaged See drive system Faulty transmission See transmission system