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Reelmaster 3550−D Hydraulic SystemPage 4 − 119
Disassembly (Fig. 76)
1. Remove oil from the steering cylinder into a drain pan
by slowly pumping the cylinder rod. Plug both ports and
clean the outside of the cylinder.
IMPORTANT: Prevent damage when clamping the
steering cylinder into a vise; clamp on the clevis
ONLY.
2. Mount barrel end of steering cylinder in a vise. Use
a spanner wrench to remove internal collar from barrel.
3. Remove plugs from ports. Extract rod, head and pis-
ton assembly from barrel by carefully twisting and pull-
ing on the rod.
IMPORTANT: Do not clamp vise jaws against the
rod surface. Clamp on the clevis ONLY.
4. Mount rod securely in a vise by clamping on the cle-
vis of the rod. Remove lock nut from the rod. Slide piston
and head off the rod.
5. Remove seals, back−up rings and O−rings from the
piston and head. Discard removed seals.
Assembly (Fig. 76)
1. Make sure all steering cylinder components are
clean before assembly.
2. Coat new O−rings, seals and back−up ring with
clean hydraulic oil.
A. Install piston seal and O−ring to the piston.
B. Install O−ring, back−up ring, head seal and dust
seal to the head.
IMPORTANT: Do not clamp vise jaws against the
rod surface. Clamp on the clevis ONLY.
3. Mount rod securely in a vise by clamping on the cle-
vis of the rod.
A. Place internal collar onto rod.
B. Coat rod with a light coat of clean hydraulic oil.
C. Carefully slide head assembly and then piston
assembly onto the rod. Install lock nut onto the rod
and torque nut 40 ft−lb (54 N−m).
D. Remove rod assembly from the vise.
IMPORTANT: Prevent damage when clamping the
steering cylinder into a vise; clamp on the barrel
clevis ONLY.
4. Mount clevis of the barrel in a vise.
5. Coat all internal cylinder parts with a light coat of
clean hydraulic oil. Slide piston, rod and head assembly
into the barrel being careful to not damage the seals.
6. Thread the internal collar into the barrel and secure
with spanner wrench.
Hydraulic
System