Chapter 3. REPAIR OF FORKLIFT

CHAPTER 3

REPAIR OF FORKLIFT

Section I. ENGINE ACCESSORIES

3-1. General

not be less than 0.004 inch nor more than 0.011

This section contains information on the main-

inch.

tenance of those items considered to be engine

(2) Using a micrometer depth gage, measure

accessories. These items consist of the oil pump, oil

distance from face of pump body (7) to sides of

cooler, air inlet housing, blower assembly, limiting

inner ( 10) and outer ( 11 ). Clearance should not be

speed mechanical governor, water pump, engine

less than 0.001 inch nor more than 0.0035 inch.

generator and starter.

NOTE

3-2. Oil Pump and Crankshaft Pulley

Rotors are obtainable only in matched sets.

a. General. The rotor type oil pump is bolted to

e. Reassembly. Reassembly is the reverse order

inside of the lower engine front cover and driven

of disassembly. Refer to figure 3-3 and reassemble

directly by the crankshaft. Oil is directed to the

the oil pump.

lower engine front cover and then to a mail oil

f. Installation.

gallery in the cylinder block, under pressure, to the

(1) Refer to figure 3-2 and install the oil pump

main bearings, balance shaft, and crankshaft

and crankshaft pulley.

bearings. The crankshaft pulley is used to drive the

(2) Install the oil pan (fig. 3-1).

engine generator and the radiator fan.

(3) Install the engine (para 2-9).

b. Removal.

(1) Remove the engine (para 2-9).

(2) Remove the oil pan (fig. 3-1).

(3) Refer to figure 3-2 and remove the oil

pump and crank shaft pulley.

c. Disassembly. Refer to figure 3-3 and

disassemble the oil pump in numerical sequence.

NOTE

Clean pump thoroughly to remove all traces of dirt,

sand, or foreign matter which might damage the

pump. Discard all gaskets and replace with new one

upon reassembly.

d. Inspection.

(1) The greatest amount of wear in the oil

pump occurs on the lobes of the inner ( 10, fig. 3-3)

Figure 3-1. Oil pan, removal and installation.

and outer (11 ) rotor of each lobe. Clearance should

3-1