Section III. REPLACEMENT OF MAIN AND AUXILIARY OIL FILTER BYPASS ALVE, OIL PRESSURE REGULATOR VALVE AND FUEL/WATER SEPARATOR FILTER

Note. The fuel injection pump, fuel tubes, and

fuel tube connections must be checked for fuel

leaks with the engine running before the cooling

fans

are

installed.

Caution: Do not run engine above idle and

not longer than ten minutes without cooling fans.

1. Install a fan rotor hub sleeve spacer -4910-795-7952

(A) on each fan drive vertical drive shaft to prevent oil

seepage at fan drive oil seals while operating engine.

2. Secure the sleeve spacer (A) to each drive shaft with

the same nut (B) used to secure the cooling fan. Start

engine and check for fuel leaks. If leaks are evident

loosen the tube fittings and retighten. Replace fuel

injection tubes if leak persists.

3. Slide the 12 fuel injector tube dust caps (C) over tube

fittings at fuel injection pump hydraulic head.

Figure 4-87. Front fan drive housing fan

rotor

hub sleeve spacer-4910-795-7952

installed for leakage test.

REPLACEMENT OF MAIN AND AUXILIARY OIL F I L T E R B Y P A S S

Section

Ill.

VALVE, OIL PRESSURE REGULATOR VALVE A N D

FUEL / WATER SEPARATOR FILTER

4-5. General

The

two

outer

elements

the

fuel

water

This section covers the replacement of the

main and auxiliary oil filter bypass valves, the oil

separator filter are periodic maintenance items

pressure

regulating

valve,

and

the

fuel

water

and are allocated to the organizational main-

separator filter. The valves are not periodic

tenance personnel. These are coalescer elements

designated t o s e p a r a t e w a t e r f r o m t h e f u e l

maintenance items, and should only be removed

for inspection or replaced in case of malfunction.

system. The center element is a final fuel filter

4-44