Installation of King Pin.

TM 55-4920-424-13&P

7-5. Installation of King Pin.

a. Carefully position tire, wheel, hub assembly, and knuckle assembly, as a unit, over front axle (47).

b. Apply a light film of grease (item 2, App D) on a new king pin (43) and install in knuckle assembly and front axle.

c. Secure king pin in place with screw (42), lockwasher (41), and nut (40).

d. Position tie rod (16) over forward arm of knuckle assembly and install clevis pin (13). Secure clevis pin with new

cotter pin (12).

e. Lubricate new king pin with grease (item 2, App D).

7-6. Removal of Front Wheel Bearings. (See figure 5-4.)

a. Mount front of trailer on a suitable support with front tires clearing ground. Set parking brakes (brake handle up).

b. Remove nuts (22) and lockwashers (23), and remove tire and wheel from hub (34).

c. Remove hub cap (25), cotter pin (26), nut (27), and tongued washer (28).

d. Slide hub (34) from spindle (45).

CAUTION

Cover bearing surfaces on knuckle assembly to prevent contamination.

e. Remove bearing cones (29, 32), bearing cups (30, 33), and grease seal assembly (31) from hub (34).

CAUTION

Cover open ends of hub to prevent contamination.

7-7. Assembly and Installation of Front Wheel Bearings. (See figure 5-4.)

a. Assemble ne w bearing cones (29, 32) and new bearing cups (30, 33) as sets, and handpack with grease

(item 2, App D).

b. Install new bearing cone and bearing cup set (32, 33) in hub (34).

c. Install new grease seal assembly (31) in hub.

d. Slide hub over bearing surface of steering knuckle (46).

e. Install new bearing cone and bearing cup set (29, 30) over bearing surface of spindle (45), ensuring bearing cup

(30) is properly seated in hub.

7-2