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CUTTERSHAFT REPLACEMENT (Cont'd)
REASSEMBLY
1.
Use filtered system oil to lubricate all critical moving parts before assembly.
2.
Install one snap ring in rear groove of drive shaft. Install one thrust washer, thrust bearing, and second
thrust washer on drive shaft. Install second snap ring in front groove of drive shaft.
3.
Replace needle bearing in housing if necessary. Install shaft in housing assembly and install washer. Oil
O.D. of new shaft seal and press into position. Retain with snap ring.
4.
Compress pin keeper and install in the spline area of the piston block.
5.
Install the three pins in the special grooves of the spline and with head end of pin toward inside of block.
6.
Install one washer, spring, and second washer. Use the two 3/8 I.D. washers and the 3/8 x 3-1/4 capscrew
to compress the spring and retain with snap ring. Remove the 3/8 x 3-1/4 capscrew and two washers.
7.
Install the pivot, spider and the piston assemblies in the piston block assembly.
8.
Lubricate thrust race and install in housing assembly.
9.
Install piston block assembly in housing assembly. The piston shoes must contact the thrust race. Be sure
all parts are in their proper position.
10. Install new needle bearing in backplate if necessary.
11. Install new o-ring on backplate.
12. Install backplate on housing.
13. Install six capscrews and torque 15-18 ft. lbs.
14. On through shaft type assembly, install shaft seal and snap ring in backplate. Install key in drive shaft.
Cylinder Rod Maintenance
It is important to visually inspect the hydraulic cylinder rods daily before use. It is highly recommended that
while the machine is stored or getting very little use that a protectant is applied to the hydraulic cylinder rods to
prevent degradation. If the machine receives more frequent use, be sure to fully cycle each cylinder function so
that the cylinder rod is coated by the systems hydraulic fluid. Depending on your operating environment it may
be necessary, under normal operating conditions, to apply a protective lubricant to the cylinder rods for protec-
tion against rust and pitting. Hydraulic fluid may provide a suitable amount of protection, but remember any
protectant can attract dust and debris so attention must be given to the cylinder rods daily. Also remember that
any other protectant must be compatible with hydraulic fluid. Alamo Industrial is not responsible for rust or pit-
ting of the cylinder rod due to weather exposure or impacts from normal operation or mounting. If hydraulic cyl-
inders and or the cylinder rods are damaged as a result of the rods rusting or pitting, the hydraulic cylinders
and rods will not be covered under warranty by Alamo Industrial.
GRASS KING 03/09
© 2009 Alamo Group Inc.
MAINTENANCE
Maintenance Section 5-11
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