Brake Cylinder; Removal; Disassembly; Figure 3-21: Brake Cylinder Assembly - Upright X Series Service & Parts Manual

Maintenance
3.14 B C
RAKE YLINDER
X Series Work Platform
The brake cylinder is located between the rear wheels at the rear of the chassis.
NOTE: The X31N has two brake cylinders. All other X Series machines have only one.
R
EMOVAL
1. Block the wheels to prevent
the work platform from rolling
when the brake is removed.
2. Remove the adjustment lock-
nut and jam nut.
3. Tag and disconnect the hose
assemblies and cap the
openings to prevent foreign
material from entering.
4. Remove the shoulder bolt and
locknut that mounts the cylin-
der rod to the brake tube.
5. Remove the cotter pin and
pivot pin from the rear cylin-
der mount. Remove the cylin-
der.
D
ISASSEMBLY
1. Remove the C-clip from the barrel assembly
and remove the cylinder.
2. Completely disassemble the cylinder.
3. Remove all the seals and O-rings, noting their
location to aid in reassembly.
C I
LEANING AND NSPECTION
1. Wash all the metal parts in cleaning solvent,
and blow dry with filtered compressed air.
2. Inspect all the threaded components for
stripped or damaged threads.
3. Check the inside surface of the cylinder barrel
for scoring or excessive wear.
4. Check the piston and headcap for scoring or
excessive wear.
5. Inspect the surface of the shaft for scoring or
excessive wear.
A
SSEMBLY
1. Lubricate and install new seals and O-rings.
2. Install the headcap onto the shaft.
3. Install the new internal backup rings and O-rings on the piston.
4. Install the piston on the shaft and torque to 250 Ft/Lbs (339 Nm).
5. Place the spring into the barrel. Lubricate the piston seal with clean hydraulic fluid, and
install the shaft assembly in the inner cylinder barrel.
6. Push the rod in far enough that the head is below the C-clip groove. Install the C-clip.

1.Brake Cylinder

2.Shoulder Bolt
3.Locknut
4.Brake Tube
5.Clevis Pin
6.Adjustment Locknut
7.Cotter Pin
8.Brake Shoe
8
060571-005
3.14 - Brake Cylinder
Figure 3-20: Brake Cylinder
8
4 5
1
2

Figure 3-21: Brake Cylinder Assembly

B
A
A. Barrel
D
B. Spring
C. Piston
D. Cylinder Head
E. C-Clip
F. Rod
Seal Kit Part
7
6
3
C
F
E
Page 3-17