Hydraulic Filter

TM 10-3930-630-12

Figure 4-23. Hydraulic filter element indicator, installed view.

filter housing. (fig. 4-24).

(2) Remove screws, lockwashers and nuts

(3) Remove hydraulic filter housing.

securing indicator to bracket and remove indicator.

d. Installation.

Remove packing from filter head (fig. 4-24).

(4) Remove filter element from housing.

(1) Install indicator (fig. 4-23) in position

(5) Clean inside of filter body and filter

on bracket. Secure indicator with screws, lockwashers

head with cleaning compound, solvent (Fed. Spec. P-D-

and nuts.

680) and dry thoroughly.

(2) Remove plugs from indicator and

(6) Install new filter element in filter

hoses. Connect hoses to indicator.

housing.

(3) Check oil level in reservoir and fill to

(7) Install new packing in filter head and

proper level Refer to current lubrication order for

install housing and filter element by screwing housing

correct oil

into head.

(4) Bleed hydraulic system (para 4-34).

(8) Tighten housing to 20 to 30 pound-feet

(5) Operate truck and observe indicator.

(27.1 to 40.6 N-m).

Indicator should register filter element condition.

(9) Check oil level in hydraulic reservoir

4-43.

Hydraulic Filter

and add oil if necessary. Refer to current lubrication

order for correct oil.

a. General. The hydraulic filter is mounted at

(10) Operate hydraulic system and check

for leaks. Correct leaks if necessary.

the right front of the truck. All hydraulic oil flows from

(11) Bleed hydraulic system (para 4-34).

the control valve and steering valve through the filter

(12) Install right front cowl

and returns to the reservoir.

c. Filter Replacement.

b. Service.

The filter element must be

(1) Removal.

replaced at intervals shown on the current lubrication

(a) Remove right front cowl

order. It should also be replaced at any time the filter

(b) Disconnect

steering

system

element indicator shows flow through the element is

return hose (fig. 4-24) from elbow at inlet hose (fig. 4-

restricted. To replace the element, proceed as follows:

24). Remove elbow and packing from inlet elbow.

(1) Remove attaching parts and remove

right front cowl

(2) Place a suitable container below filter.

Use an appropriate wrench on the large hex on hydraulic

4-33