SkyTrak 6036 Service Manual - Manual (Page 99)

Section 8. Engine
Model 6036 S/N 9B0499 and Before 8-13
a. Removal
1. Remove fuel pre-filter inlet and outlet tubes
(11, Fig. 8.18).
2. Support filter with one hand and remove lock
nuts (15) and capscrews (14) and remove fuel
pre-filter from mounting bar.
3. Remove locknut (15), capscrew (12), lock
washer (13) and mounting bar (16).
b. Disassembly
Loosen the hex head screw in the top of the filter
and separate the filter base from the filter head.
c. Cleaning and Drying
Clean the pre-filter using an approved solvent and
dry with a clean, lint-free cloth.
d. Assembly
Assemble filter base to filter head using hex head
screw.
e. Installation
1. Install mounting bar (16, Fig. 8.8) using cap-
screw (12), lock washer (13) and lock nut (15).
2. Hold filter in position and install capscrews
(14) and lock nuts (15) to secure filter to
mounting bar.
FUEL LIFT PUMP
PRIMING LEVER
Fig. 8.20 Fuel Lift Pump
8.4.5 Fuel Lift Pump
Clean fuel lift pump sediment chamber, Fig. 8.10
and 8.20, every 500 hours of operation.
1. Unlock and open the left rear engine access
door.
2. Remove fuel lift pump cover screw, cover
washer, cover, and strainer.
3. Wash any sediment from lift pump and clean
cover and strainer.
4. Install strainer and cover making sure that
cover seats on pump with NO leakage.
5. Remove air from the fuel system. (See para-
graph 8.4.8, How to Bleed to Fuel System).
6. Close and lock access door.
a. How to Test the Fuel Lift Pump in Position
1. Disconnect the outlet line from the lift pump to
the fuel filter.
2. Rotate the engine. There should be a spurt of
fuel from the outlet port once every two
revolutions.
b. How to Test Pressure with Pump in Place
1. Fit a 0 to 10 psi (0 to 0,7 bar) pressure gauge
to the outlet of the pump. Ensure that there
are no leaks at the connections between pump
and gauge.
2. Crank the engine for 10 seconds and note the
maximum pressure on gauge. If the pressure
recorded is less than 75 percent of minimum
production static pressure which is 4.5 psi
(0,31 kgf/cm
2 or 31 kN/m 2 ), then repair or
replace the pump.
NOTE: Minimum production static pressure is 6
psi (0,42 kgf/cm
2 or 41 kN/m 2 ).
Also observe the rate at which the pressure
drops to half the maximum figure obtained
when cranking has ceased. If less than 30
seconds, repair or replace the pump.
NOTE: These figures apply to a 4-bolt-type fuel lift
pump. If your engine has a 2-bolt-type fuel lift
pump, contact your Perkins Engine Distributor for
pump pressure specifications.
a. Fuel Lift Pump Removal
1. Disconnect lines from fuel pre-filter and to the
fuel filter.
2. Remove four capscrews and lock washers that
secure the fuel lift pump to the engine.
b. Disassembly and Assembly
Refer to your Perkins Engine Distributor for
disassembly and servicing of the fuel lift pump.
c. Cleaning and Drying
Clean the pump as described in paragraph 8.1.5,
Fuel Lift Pump Sediment Chamber. Clean the
exterior of the pump with an approved solvent and
dry with a clean lint-free cloth.
d. Inspection and Replacement
Refer to your Perkins Engine Distributor if fuel lift
pump requires component replacement or repair.
OA0332