(2) Be sure shutoff cock (drain cock) in supply line at
bottom of tank is open to assure gravity flow of fluid to
cylinders, then bleed compensator (cylinders) in lever
stand by opening bleeder cap in each compensator,
starting with the lower compenstor, and working upward
through the top row.
(3) After bleeding lever stand compenstor begin
bleeding clutch and brake cylinders, starting with the
lowest one than working upward toward cylinders
mounted at highest point Attach one end of bleeder hose
to bleeder hose then let opposite hose end rest in jar
partially filled with hydraulic fluid. Always keep this end
of hose under fluid to prevent air from entering bleeder
hose and reentering the hydraulic system Open bleeder
screw, apply pressure to appropriate lever or pedal and
watch hose end in jar. When bubbles no longer form in
fluid, close bleeder screw and remove bleeder hose from
screw. Repeat above procedure for each cylinder in
system
(4) Move each control lever or pedal slowly and note
clutch or brake action. If any of the controls still feel
spongy, repeat bleeding operation.
(5) Fill both hydraulic tanks (para 3-18 -and LO 5-
Figure 3-85. Hydraulic tank removal and installation.
3810-206-12) with clean fluid. Check level frequently
while bleeding cylinders, then bleed air from the propel
brake cylinders in car body. Reach through holes in turret
(3) Repair by welding cracks, straightening
just above the tread. The bleed screw for these cylinders
dents, or replacing defective hardware or hydraulic tank.
is toward inside of car body. Reach around the cylinder,
install bleeder hose, then open screw. Tighten bleeder
3-111. Hydraulic Hose, Lines Tubes and Fittings.
screw as soon as bubbles no longer appear in bleeder jar.
Repeat procedure on remaining propel clutch hydraulic
cylinder.
and remove appropriate hydraulic hose line tube or fitting.
Install in reverse order.
3-110. Hydraulic Tank (Reservoir)
b. Cleaning, Inspect and Raw.
a. Removal and Installation.
(1) Clean all parts in an approved cleaning
solvent and dry thoroughly.
(1) Close shutoff cocks in two supply lines
(2) Visually inspect all for leaking connection,
beneath tank, tag and disconnect supply lines, then plug
dents, or cracks. Inspect hardware and fittings for signs
lines to prevent contamination of hydraulic system.
of excessive wear or damaged condition.
(2) Open tank by removing breather or filler
(3) Repair by -replacing defective components.
plugs, position suitable container to receive fluid, then
open shutoff cocks and drain hydraulic fluid from tank.
(3) Refer to figure 3-85 and remove hydraulic
3-112. Compensators (Cylinders)
tank.
a. Removal and Installation. Refer to sheet 1 of
b. Cleaning, Inspection and Repair.
in reverse order.
(1) Clean all parts in an approved cleaning
solvent and dry thoroughly.
b. Clean , Inspection and Repair
(2) Visually inspect all parts for dents, cracks,
or excessive wear.
(1) Clean all parts with an approved cleaning
solvent and dry thorough.
3-92
