H-4 Plate Drive Installation Instructions
Mounting Dimensions and Requirements
Refer to Figure B.5 on page B-11 for plate drive dimensions and 
mounting hole locations.
Use the pattern illustrated in Step 3 below to gradually tighten all 
mounting bolts to the recommend torque of 2.0 N-m (18 lb.-in.).
Verification
Once the drive is mounted, a worst-case test should be run to verify the 
design. The drive should run at its maximum load conditions at the 
highest expected surrounding air temperature. After four hours in this 
condition, the temperature of the drive plate should be measured. It 
should not exceed 75° C (167° F) at its hottest point. Also, parameter 
b024
 [Drive Temp] should be monitored and should not exceed 80° C 
(176° F).
3
1
4
2.0 N-m
(18 lb.-in.)
2
Isopropyl
Alcohol
1
4
5
6
3
2