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HYDRAULIC SYSTEM
CD5515-2/YB5515-2 SERVICE MANUAL
4-26
Published 1-20-2017, Control# 483-02
14.
Exclusion seal (2), backup ring (4), shaft pressure seal
(5) and seal (6) will come off with flange (3). Use the seal
removal tool to remove the exclusion and pressure seals
Figure 4-16 and Figure 4-17.
NOTE:
Important: Be careful not to scratch the seal cavity
outside diameter. This could create a leak path.
15.
A metal plug (12) Figure 4-13, with O-ring (11), plugs a
machined hole in the housing. It is not necessary to
remove the plug and replace the O-ring unless leakage
occurs around the plug. To remove the plug, insert a 5
mm (0.187 in) hex key through the port opening and
push it out. The model 009 plug is not interchangeable
with the 007 and 008 plugs.
Inspection/Cleaning
Check all mating surfaces. Replace any parts with scratches
or burrs that could cause leakage or damage. Clean all metal
parts in a suitable solvent. Blow dry with air. Do not wipe
parts with a cloth or paper towels, because lint or other
matter could get into the hydraulic system and cause
damage.
Check around the key slot and chamfered area of the shaft
for burrs, nicks or sharp edges that could damage seals
during assembly. Remove nicks or burrs with a hard smooth
stone. Do not file or grind motor parts.
NOTE:
Lubricate all seals with petroleum jelly. Use new
seals when assembling the motor.
DO NOT
stretch the seals before installing them.
Cleanliness is extremely important in the successful
application of Loctite. Before Loctite can be applied, the parts
should be cleaned as follows:
NOTE:
Fully cured Loctite resists most solvents, oils,
gasoline and kerosene and is not affected by
cleaning operations. It is not necessary to remove
cured Loctite that is securely bonded in tapped
holes; however, any loose particles of cured Loctite
should be removed.
1.
Wash the housing with a suitable solvent to remove oil,
grease and debris. Pay particular attention to the four
tapped holes on the flange end.
2.
Blow dry with compressed air. Clean and dry the tapped
holes.
3.
Wire brush the screw threads to remove cured Loctite
and other debris. Discard any screws that have
damaged threads or rounded heads.
4.
Wash the screws with a non-petroleum base solvent.
Blow dry with compressed air.
Assembly
Shaft End
1.
If plug (12) Figure 4-13 was removed, lubricate the new
O-ring (11) and install on the plug. The plug has two O-
ring grooves, but requires only one O-ring in the groove
closest to the end of the plug. Push the plug into the
housing (10) until it is flush with the housing. Be careful
not to damage the O-ring.
2.
Lubricate output shaft (9) with hydraulic oil and install the
shaft into housing (10).
a0765
FIGURE 4-15
Heat with a propane
torch to melt Loctite
Capscrew (4)
a0766
FIGURE 4-16
Radius
Bend Tip
Modify
screwdriver as
shown.
Remove all
burrs
a0767
FIGURE 4-17
Mounting
Flange
Seal Tool
Pressure Seal
Exclusion Seal
Reference Only