45
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5. Position pump and battery box frame on 
vehicle frame cross members (FIG. 45-1). 
Ensure vent holes on back of the battery 
box are not obstructed or covered (FIG. 
45-1). Weld pump and battery box frame 
to cross members as shown in FIG. 45-1.
ALIGNING PUMP & BATTERY BOX FRAME
TO WELD ON CROSS MEMBERS
 FIG. 45-1
3/16”
3/16”
WELD PUMP & BATTERY FRAME, 
ALONG WIDTH OF FRAME ANGLE, TO 
EVERY CROSS MEMBER IN CONTACT 
WITH FRAME ANGLE
CROSS MEMBERS
CROSS MEMBERS
STEP 7 - ATTACH PUMP & BATTERY BOX FRAME TO 
VEHICLE - Continued
NOTE: Any methods not shown in this section, for welding mounting brackets to 
cross members, must be approved by body or trailer manufacturer.
Explosive hydrogen gas from charging batteries can accumulate in battery box if 
not vented from the box. To prevent hydrogen gas from accumulating, ensure the 
3 ventilation holes in battery box are not plugged or covered. 
WARNING
!