Kohler 3.5CFZ User Manual download pdf (Page 45)

TP-5695 12/93 Scheduled Maintenance 3-17

Pressure Cap

Closed-loop cooling systems incorporate a pressurized

captoraisetheboilingpointofthecoolantandmakeuse

of higher operating temperatures. If leakage or

malfunction occurs, replace the pressurized cap with

one supplied by Kohler Co. part number 229958.

1. Mounting Base

2. Retaining Cap

3. Reed Valve Assembly

1-779

Figure 3-18. Siphon Break

Siphon Break

An optional siphon break is used to prevent seawater

entry into the engine when the generator set is shut

down.Corrosion buildupmaynot allowthe siphonbreak

tofunction properly.Therefore,if used,thesiphonbreak

must be inspected and cleaned periodically.

NOTE

To prevent siphoning of seawater, run the generator

while performing this inspection.

Removethe retaining cap toinspectthereed valve. See

Figure 3-18. Clean the reed valve to remove residue

and oxidation. Check that the reed valve (opening) is

clear. Replace the siphon break if the material has

hardened or deteriorated. Install the reed valve with the

valvedownwardintothemountingbase.Installretaining

cap and tighten finger-tight only. Do NOT overtighten.

Air Cleaner and

Mixing Elbow

Servicing Air Cleaner

The engine is equipped with a dry-type air cleaner.

Every 50 hours (more often if operating under dusty or

dirtyconditions) removeelementandservicebytapping

element lightly against flat surface to dislodge loose

surface dirt. Do not clean in any liquid or blow out with

compressedairasthiswillruin filter material in element.

Service air cleaner after each 50 hours of operation. If

dirty, bent, or damaged replace element with genuine

Kohler replacement. See Figure 3-19.

1-905

Figure 3-19. Air Cleaner Service

Servicing Mixing Elbow

The mixing elbow combines high temperature exhaust

and cooling seawater. These conditions are conducive

to rapid deterioration and, combined with engine

vibrations,premature failuresifnotproperlymaintained.

Check the mixing elbow for carbon buildup and

corrosion inside the pipe. Clean or replace the mixing

elbow as necessary. Inspect the exhaust manifold

mounting threads for cracking and corrosion.

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Kohler 3.5CFZ User Manual Page 45

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