SECTION 35 - HYDRAULIC SYSTEM - CHAPTER 1
35-2
WARNING
Hydraulic fluid escaping under pressure can
penetrate skin. Hydraulic fluid may infect a cut. If
injured by hydraulic fluid, see a doctor at once.
Do not attempt to repair or tighten hydraulic
hoses under pressure. Cycle all hydraulic
circuits to relieve all pressure before disconnect-
ing the lines or before performing other work on
the hydraulic system. Make sure all connections
are tight and hoses and lines are in good
condition before applying pressure to the
system.
REEL HYDRAULIC DRIVE
The reel is hydraulically driven. Fluid under pressure
is supplied from the combine to drive the motor and
reel. A “break away” type of mount connects the
motor to the frame. If the reel should become
jammed during operation, a special bolt in the mount
will shear and allow the motor to swing away. The
outer coupling will disengage from the inner half, and
force will no longer be applied to the reel.
Hydraulic Motor Removal
1. Label and disconnect the hydraulic lines, 1. Cap
the lines to prevent entry of foreign material.
2. Remove the four mounting cap screws, 2, lock
washers, and nuts. Pull the motor from the reel
assembly. The motor will slide from the outer
coupling half, 3.
Hydraulic Motor Installation
1. Set the outer coupling half, 3, onto the inner
coupling. Engage the shaft spline with the outer
coupling half. Secure the motor to the mount
using four cap screws, 2, lock washers, and nuts.
2. Attach the hydraulic lines, 1, to their original
ports.
REEL FORE/AFT CYLINDERS
The reel lift system consists of two cylinders. These
cylinders act together. When extending the cylinders
to move the reel forward, the right cylinder acts as the
master and the left cylinder acts as the slave.
Retracting the cylinders to move the reel aft, the left
cylinder acts as the master and the right cylinder acts
as the slave.
The cylinders are different sizes. The left has a larger
diameter than the right. Repair procedures are
similar for both cylinders. Ensure, however, to have
the correct seal kit. Seal kits are not interchangeable.
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