42
LUBRICATION AND MAINTENANCE
FUEL INJECTOR REMOVAL AND INSTALLATION
The injectors should be cleaned, tested, and
adjusted every 600 hours. Do not disassemble or
adjust the injectors yourself. Remove them from the
tractor engine and have them serviced by your
RANSOMES Tractor Dealer.
To remove the injectors
1. Clean all loose dirt from around the injectors
and lines. Disconnect the leak-off lines from
the injectors, Figure 56.
2. Disconnect the injection pump lines at the
pump and injectors. Cover the ends of the
lines and the injector inlet and leak-off ports
to prevent the entry of dirt.
3. Remove the injectors.
4. Remove and discard the copper injector
sealing washers from the injector locating
bores. If a spare set of injectors is not
immediately available, cover the bores to
prevent the entry of dirt.
After the injectors have been serviced, install them
as follows.
1. Install a new copper sealing washer in each
injector locating bore. Install the injectors and
tighten the retaining nut to 22-29 lbs. ft. (29-
39 N.m).
IMPORTANT: Do not overtighten the retaining
nuts. Overtightening may distort the injector.
Figure 56 - Fuel Injector Leak-off Lines
2. Install the injector lines. Finger tighten the
fittings at the injectors until after bleeding the
fuel system. Tighten the fittings at the
injection pump to 58-61 lbs. ft. (78-83 N.m).
3. lnstall the leak-off line. Tighten the leak-off
line nuts to 22-36 lbs. ft. (29-49 N.m).
4. Bleed the fuel system as covered under
“Bleeding the Fuel System,” page 35. Tighten
the injector fittings.
WARNING: Fuel oil in the injection
system is under high pressure and can
penetrate the skin. Unqualified persons
should not remove or attempt to adjust
a pump injector, nozzle or any part of
the fuel injection system.
DO NOT use your hand to check for
leaks. Use a piece of cardboard or
paper to search for leaks.
If any fluid is injected into the skin,
obtain medical attention immediately or
gangrene may result.
Failure to follow these instructions can
result in serious injury.
ENGINE SPEED ADJUSTMENT
The adjustments for idle and maximum no-load
speed settings should be adjusted according to the
following procedures
Idle Speed
1. Pull the throttle lever rearward to the lowest
engine speed, this makes foot throttle free.
2. Adjust to the designated idling engine speed
(800-900 rpm) by adjusting idling stop bolt
and lock it.
Maximum Speed
1. Push the hand throttle lever forward to the
maximum engine speed.
2. To adjust maximum engine speed to 2650-
2700 rpm, elongate outer cable gradually by
tightening the adjusting screw of throttle wire,
and lock the adjusting screw.
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