MBW GPR135 - Manual (Page 17)

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3/16" BEAD
LOCTITE 515
GASKET MAKER
HOUSING SIDE
OF COVER
SHAFT/BEARING
COVER
BASE PLATE COVER SEALANT APPLICATION
1/8" BEAD
LOCTITE 515
GASKET MAKER
7 5/8"
7/16"
7/16" 12 3/16"
MAIN HOUSING
COVER
FIGURE 4 FIGURE 3
Control Head Disassembly Procedure
Refer to Control Head Assembly, page 30.
1. Remove the hydraulic fitting (#1), adapter fitting (#14)
and O-ring (#3) from the control head housing (#7).
2. Push piston shaft (#12) out of control head by lightly
tapping the exposed end, being careful not to
damage the shaft.
Note the orientation of hydraulic seal (#5) lip direction.
3. Remove seal (#5) and guide bearing (#10) from shaft
(#12).
4. Remove seal cap (#13) and washer seal (#2) from
control head (#7).
Note: When removing seals be careful not to scratch or
damage seal mounting surfaces.
5. Remove hydraulic seal (#9), guide ring (#11) and
wiper seal (#8) from seal cap (#13).
6. Remove socket pipe plugs (#15 & 16), and hydraulic
fitting (#6) from control head (#7).
7. If Required use a 1/4” pin punch to drive the slide
bushing (#4) out of the control head (#7).
Clean the control head (#7) to remove any dirt or debris,
making sure all ports & passages are open.
Baseplate Assembly Procedure
Refer to BASEPLATE ASSEMBLY, page 28.
1. Clean all baseplate components.
Note: Make sure the bearings and their inner races are
kept as a matched set.
2. Inspect all bearings, shafts, helix pin carrier and
gears for wear, debris and discoloration from heat.
Replace as needed. Replace the roller bearings
and the inner races on each shaft as a set (both
bearings on the shaft) as needed. Replace the
helix carrier ball bearings as a set at each
complete disassembly or rebuild. Replace all
seals and gaskets removed at each disassembly
or inspection.
3. Install the input shaft cover seal (#5) into cover (#9).
4. Press the roller bearings (#4) into all four of the
covers (#7, #9, #12 & #18). Note: Make sure the
bearings and their inner races are kept as a
matched set.
5. Install the hex head flange screws (#21) into the shaft
bearing covers using LOCTITE #243 thread locker
sealant.
6. Install the plastic plugs (#1) in the threaded holes
used to press the covers out of the baseplate.
7. Install the key (#12) into the idler shaft (#8).
8. Align the idler gear (#11) with the key (#12) and idler
shaft (#8) and press the idler gear onto the idler shaft
using exciter oil as a lubricant. Reference the figure
5 for the idler gear and shaft orientation.
9. Press the bearing inner races onto the idler shaft/
gear assembly. The flanged end of the inner race
goes toward the shoulder on the shaft.
10. Place the idler shaft and gear assembly into the
baseplate housing in the forward location. Note: The
housing is not symmetric. The input/pulley side
of the housing has a pocket machined for the belt
bellows. This pocket is to be oriented toward the
front left side of the machine. The end of the idler