Figure 3-64. Hydraulic oil filter, service and replacement.

(5) Clean head assembly and interior of base and

inspect for nicks and defects.

(6) Install new element in base and new gasket

at top of base.

(7) Position base in head assembly and secure

with head bolt.

(8) Operate truck hydraulic system and check

filter for leaks. Check level of hydraulic oil in reser-

voir and add oil to bring to FULL mark on gage.

(9) Install right hand cowl.

c. Removal. Refer to figure 3-64 and remove hy-

draulic oil filter as follows:

(1) Remove right hand cowl.

(2) Place a suitable container beneath filter to

catch oil. Loosen clamps and disconnect hose assem-

blies from both sides of head. Plug hoses to prevent

entrance of foreign material.

(3) Remove two screws, nuts, and lock washers

and remove complete filter assembly from truck.

(4) Remove two elbows from filter head.

d. Installation. Refer to b above to service hydrau-

lic filter, if necessary. Refer to figure 3-64 and install

hydraulic filter as follows:

(1) Install two elbows in filter head.

(2) Install filter assembly on frame and secure

with two screw, nuts, and lock washers.

(3) Remove plugs from hoses. Install hoses on

Figure 3-63. Hydraulic oil reservoir and breather,

elbows and tighten hose clamps securely.

installed view.

(4) Operate truck hydraulic system and check

filter and hoses for leaks.

(5) Add oil to reservoir to bring level to FULL

mark on level gage.

(6) Install right hand cowl.

3-75. Tilt Cylinder

a. General. Two tilt cylinders are mounted on either

side of the front of the frame and are connected to

the mast. The cylinders operate to tilt the mast to

the rear to provide safer carrying and lifting of loads.

b. Removal. Refer to figure 3-65 and remove the

tilt cylinder as follows:

(1) Operate the tilt control lever (fig. 2-2) to tilt

the mast forward. Connect a chain hoist to the mast

to hold it in the forward position.

(2) Shut off truck engine. Remove floor and toe

plates.

(3) Disconnect hydraulic hose assemblies from

tilt cylinder. Plug hoses and cylinder parts.

(4) Support cylinder with a block of wood. Re-

move cotter pin and remove pin and washers from

yoke at front of cylinder.

(5) Remove screw and lock washer and remove

pin retainer from bracket and pin at rear of cylinder.

Figure 3-64. Hydraulic oil filter, service and replacement.

3-56