Paragraph 30
CASE/iNTERNATiONAL
tery, hood, panels and instrument panel) except ac-
cess panel to adjust relief valve (5) pressure. Refer
to paragraph 23 and adjust relief valve pressure as
follows: Remove plug (1—Fig. 35) and with engine
operating at 1000 rpm, check relief pressure on gage.
Pressure should be 2150 psi (14825 kPa). Tum adjust-
ing plug (3) inward to increase pressure or outward
to decrease pressure. Install and tighten plug
(1)
and
complete balance of installation.
STEERiNG CYLiNDER
Various types of steering cylinders are used de-
pending on front axle type. Refer to the appropriate
following paragraphs for overhaul procedures.
Modeis With Adjustabie Front Axie
30.
R&R AND OVERHAUL. Ib remove the steer-
ing cylinder, first disconnect steering hose at each
end of cylinder. Plug or cap all openings. Remove the
clevis pin at right end of cylinder shaft. Straighten
lockstrip and unbolt lower pivot arm. Remove lower
arm, then remove clevis end from anchor on axle
main member Lower cylinder assembly from upper
pivot arm.
Ib disassemble the cylinder, first clean exterior of
cylinder and clamp lower pivot flange in a soft jawed
vise.
Remove elbow fitting
(11—Fig.
38) from left end
of cylinder rod and clevis (15) from right end. Lift end
of retaining ring
(13)
out of slot, then using a pin type
spanner, rotate cylinder head (6) and work retaining
ring out of its groove. Cylinder rod and piston assem-
bly (3) can now be removed from cylinder tube (12).
Remove remaining cylinder head in the same man-
ner. All seals, '*0'* rings and back-up rings are now
available for inspection and/or renewal. Clean all
parts in a suitable solvent and inspect. Check cylin-
der tube (12) for scoring, grooving and
out-of-
roundness. Light scoring can be polished out by us-
ing a fine emery cloth and oil, providing a rotary mo-
tion is used during polishing operation. A cylinder
tube that is heavily scored or grooved, or is
out-of-
round, should be renewed. Check piston rod and pis-
ton (3) for scoring, grooving and straightness. Polish
out very light scoring with fine emery cloth and oil,
using a rotary motion. Renew rod and piston assem-
bly if heavily scored or grooved, or if piston rod is
bent. Inspect bores of cylinder heads (6) and renew
same if excessively worn or out-of-round. All **0"
rings,
seals, back-up rings and retainer rings are avail-
able in a seal kit. Lubricate all "0*' rings, back-up
rings and seals during assembly.
Reassemble steering cylinder as follows: Install a
new
**0''
ring
(2)
in groove of piston, then follow with
new seal ring (1). Install "0" ring (7), back-up ring
(8) and wiper seal (9) in each cylinder head (6) and
back-up ring (5) and
*'O'*
ring (4) over each cylinder
head. Using a ring compressor or suitable hose clamp
around piston seal ring
(1),
install piston and rod as-
sembly. Install cylinder head assemblies over each
end of piston rod and into cylinder tube. Align hole
in groove of cylinder heads so they will accept nib
on end of retaining rings
(13).
Rotate cylinder heads
until retaining rings are pulled completely into cyl-
inder tube. Using new '*0" rings (10 and 14), install
elbow (11) in left end of cylinder rod and clevis (15)
on right end. Tighten clevis to a torque of 170-180 ft.-
lbs.
(230-244 N-m).
Reinstall cylinder on tractor by reversing removal
procedure. Tighten lower arm retaining cap screws
Fig. 37—Use a feeiergage to measure gap between rotor
and
stator.
Fig. 38—Expioded view of steering cylinder used on
modeis with adjustable front axie.
1.
Seal ring
2.
"0" ring 10. "0*' ring
3.
Rod & piston 11. Elbow fitting
assy. 12. Cylinder tube
4.
"O'* ring 13. Retaining rings
5.
Back-up ring 14. "O'* ring
6. Cylinder head 15. Clevis
7.
*'O" ring 16. "O" ring
8. Back-up ring , 17. Elbow fitting
9. Wiper seal 18. Pin
28
To Next Page
