SERViCE MANUAL
Paragraphs 67-68
NOTE:
Valve and nozzie tip are mated parts and
under no circumstance shouid valves and nozzle
tips be interchanged.
Install shim
(4),
spring (5) and spring seat (6) in noz-
zle body (3). Place spacer (7) and nozzle tip (9) with
Fig. 60—Expioded view of Robert Bosch fuel injector
nozzie assembiy used on aii models.
Washer 6. Spring seat
Clamp 7.
Nozzle body 8.
Shim 9.
Spring 10.
1.
2.
3.
4.
6.
Spacer
Valve
Nozzle tip
Nozzle holder nut
valve (8) in position and install holder nut
(10).
Tight-
en holder nut to a torque of 40-50 ft.-lbs. (55-70 N-m).
Connect assembled iryector nozzle to a test pump
and check opening
pressure.
Adjust opening pressure
by varying number and thickness of shims
(4).
Open-
ing pressure should be adjusted to 3050 psi (21030
kPa) if old spring (5) is used or to 3260-3380 psi
(22500-23300 kPa) if new spring is installed. Valve
should not show leakage at orifice spray holes for 10
seconds at 300 psi (2068
kPSt)
below opening pressure.
Maximum allowable leakage through retum port is
10 drops in one minute at 300 psi (2068 kPa) beiow
opening pressure.
ETHER STARTiNG AiD
Aii Modeis
67.
At temperatures below freezing, it is necessary
that ether be used as a starting aid. Ib test the ether
spray pattern, disconnect ether line at spray nozzle
and remove spray nozzle from intake manifold.
Reconnect spray nozzle to ether line. Press ether in-
jection button and observe spray pattem. A good
spray pattern is cone shaped. Dribbling or no spray
indicates a blocked spray nozzle or lack of ether pres-
sure.
Clean spray nozzle or install new can of ether
as required.
Ib change the ether fluid container, turn knurled
nut at bottom of bail until container can be removed.
Install new container in the bail and tighten the re-
taining nut while guiding container head into posi-
tion. Rotate container to be sure it is seated proper-
ly in ir\jector
body,
then tighten nut to hold container
firmly in position.
NOTE:
in warm temperatures, ether container may
be removed and a protective piug instalied in injec-
tor body. DO NOT operate tractor without either the
ether container or protective piug in position.
COOLING SYSTEM
RADiATOR
Aii Modeis
68.
Ib remove the radiator, first disconnect battery
cables and drain cooling system. Remove hood, grille
and front side panels. Identify and disconnect oil
cooler lines and remove oil cooler. Cap or plug all
openings. On models so equipped, remove air condi-
tioning condenser and tie condenser and hoses back
out of the
way.
Unbolt and remove lower radiator seal
strip.
Remove wiring harness from fan shroud and lay
rearward. Remove radiator side plate bolts, then un-
bolt and remove upper radiator air baffle and air in-
take tube. Remove upper and lower radiator hoses.
Unbolt and remove radiator assembly.
Reinstall by reversing removal procedure. Refill
cooling system. Capacity is approximately 3.0 U.S.
gallons (11.4 L) for Models 385 and 485 and 3.6 U.S.
gallons (13.7 L) for Models 585, 685 and 885.
45
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