TOPIC 3. TILT CYLINDER

TM 10-3930-644-14&P

TOPIC 3. TILT CYLINDER

A. DESCRIPTION

5. Remove capscrew and pin retainer (Fig 3.1).

The action of the tilt cylinder is a straight line motion.

Any misalignment between the cylinder and the piston

6. Insert drift pin (Fig 3-2) in hole provided for it in

will cause binding, rapid wear of packing and the

tilt cylinder mounting pin, and remove pin. The

packing gland, rapid wear of piston rod and packing, and

tilt cylinder may then be lifted from location.

will tend to break the weld on the cylinder case.

C. TILT CYLINDER DISASSEMBLY

The welded section is designed to hold hydraulic

pressure and should not be called upon to sustain any

1. With tilt cylinder firmly secured in bench vise,

bending action due to misalignment.

loosen capscrew on yoke and remove yoke from

plunger rod. Record number of turns required to

To remove the tilt cylinder for replacement or repair, the

remove yoke.

following procedure is recommended:

2. Remove packing gland and. pry out packing

B. REMOVAL

and wiper. Also remove O Ring, back-up ring,

and nylon pellets.

The tilt cylinders are mounted under the toe plate and

floor plate.

To remove tilt cylinders the following

3. When replacing O Ring, and back-up ring,

procedure is recommended:

lubricate with hydraulic oil and do not

overstretch when sliding over edge of packing

1. Set hand brake. Operate tilt cylinder lever and

gland.

put mast in forward position.

Turn ignition

switch to OFF position. Secure mast in position

4. When replacing plunger packing seal, remove

with a chain hoist.

items in Steps 1 and 2 in this paragraph, and

then withdraw complete piston and plunger

2. Remove cotter pin and yoke pin.

assembly from cylinder tube.

5. Remove spacers from plunger rod. An 0 Ring is

CAUTION

installed in the end spacer only.

Protect tilt cylinder rod from truck

frame and handling mishaps.

CAUTION

3. Remove toe plate and floor plate.

Do not attempt to remove piston

from plunger rod.

They do not

4. Disconnect hydraulic lines at tilt cylinder.

separate.

Figure 3-2. Tilt Cylinder Pin Removal

Figure 3-1. Tilt Cylinder Anchor Pin

3-185