Hydraulic Oil Reservoir - TM-10-3930-644-14-P0130

TM 10-3930-644-14&P

20-30 lb-ft max.

for Type I filters.

of the truck frame. Installed in the top of the reservoir is

Capscrews on Type II should be tightened

an easily accessible breather and an oil level dipstick to

to 30-35 lb-ft.

allow for a quick check of the reservoir oil level. To

avoid aeration of the hydraulic fluid the oil level must be

g. Operate hydraulic system and check for

maintained at the proper level. Air enters or exits

leaks. Correct if necessary.

through the breathers to compensate for changes of the

oil level in the reservoir during operation of the hydraulic

h. Check hydraulic oil reservoir level with all

system.

cylinders retracted.

Fill reservoir with

specified oil to full level if necessary.

After each operating interval of 1000 hours, oil in

reservoir should be drained. This is important primarily

2. Hydraulic Oil Reservoir

because of condensation and contamination. Heating of

After initial 200 hours of operation of new truck

oil during operation and cooling of it when lift truck is not

drain and flush reservoir.

in use contributes to condensation which is detrimental

to the hydraulic system. Contaminants such as dirt, rust,

3. Breather Cap (Type I Ventilation)

scale, and products of oil deterioration are .also

After each operating interval of 200 hours,

detrimental. Drain and clean oil reservoir as follows:

breather elements must be cleaned. Remove

and clean elements as follows:

1. Lower mast so lift cylinder is at its fully lowered

position and all cylinders are retracted.

a. Remove breather cap (Fig 1-1) from the

hydraulic oil reservoir.

2. Remove drain plug from bottom of oil reservoir

and allow oil to drain into a container.

b. Remove locknut, washer, and element.

CAUTION

c. Clean element in a suitable cleaning

Co not operate hydraulic pump to

solvent and dry it with compressed air.

drain hydraulic system.

d. Dip element in SAE 10 or 20 engine oil;

3. After oil has drained flush inside of reservoir with

allow oil to drain before element is

a suitable cleaning solvent. Reservoir cover

installed.

plate must be removed for flushing process.

Reservoir may be removed from truck if so

e. Install element, washer,

and

locknut.

desired.

Tighten locknut securely.

4. Dry inside of

reservoir

with

clean,

dry

f. Install breather cap

securely

the

compressed air.

hydraulic oil reservoir.

5. Install drain plug in reservoir. Fill reservoir with.

4. Air Filter (Type II Ventilation)

clean specified hydraulic oil.

During filling

After each 200 hours operation unscrew filter

operation, make certain a clean container or

and replace with a new one.

funnel is used and mast is lowered and all

cylinders are retracted.

F. 500 HOUR INSPECTION

After each operating interval of 500 hours, inspect all

6. Install breather. Operate hydraulic system and

hoses and fittings used in the hydraulic system. Replace

check for leaks; correct any if necessary.

hoses that are damaged or deteriorated. Check for

leaks and correct any that are evident.

H. HYDRAULIC PUMP

The control valve requires very little attention with the

The hydraulic puma is a tandem type dual gear unit

exception of keeping the lines, fittings, hose connections

driven by the engine. The pump has a common suction

and mounting hardware tight. Also after every 500 hours

port and one or two discharge ports. The internal Darts

of operation, check the control valve linkage.

of the pump are machined to a high degree of accuracy

and the tolerances are very close. If a pump is in need

G. 1000 HOUR SERVICE

of repair which requires complete disassembly, it is

Hydraulic Oil Reservoir

recommended the pump be sent to your local Allis-

The hydraulic oil reservoir is located within the right

Chalmers lift truck dealer for repair.

side

2-87