Group PS, Periodic Service
PS-2-10 • Planned Maintenance SM 765, Nov ’06
Battery Compartment Inspection
Turn key switch OFF. Disconnect battery from truck
receptacle.
Inspect condition of the battery connector and truck bat-
tery receptacle. Check the spring-loaded terminals, con-
nectors, and retaining tabs. Look for poor connections due
to burning, bad crimps, or broken or loose retainers.
Check the molded body for damage from overheating,
burning, and chips or cracks. Replace receptacle terminals
if pitted or corroded.
Inspect condition of the battery and cables. Check the bat-
tery cables for wear or other damage. Check for signs of
interference or rubbing with other components. Be sure
that the cable terminals are tight and clean. Clean off any
deposits of corrosion found on the battery.
Never wash the battery when it is in the truck.
Check battery post terminals for corrosion and damage.
Clean all corrosion from cable end and battery post.
Check tighmess of cable and post terminals.
If necessary, check the state-of-charge condition of the
battery. Take a specific gravity test of the electrolyte with
a hydrometer. Be sure to check a minimum of six battery
cells.
Check the electrolyte level of the battery. Add distilled
water, as required, to fill each cell to the correct level.
Check to be sure the vent hole in each battery cell cap is
open. If cap vents are plugged with corrosion, remove the
caps and wash in a solution of baking soda and water.
Refer to Group 12, Battery, for additional information.
Motor Transistor Controls Inspection
IMP
RTANTIMP
RTANT
Do not clean electrical components with
steam. Only approved solvents should be
used to clean controls.
Turn key switch OFF. Disconnect battery from truck
receptacle. Remove the control compartment cover from
the counterweight.
Discharge the capacitor using a 10W~100W resistance
connected from the +Batt(pos.) to the -Batt(neg.).
Inspect the transistor controls for clean condition. Check
for oily dirt buildup on contactors, Inspect all control wir-
ing terminals for any obvious damage. Look for cracks or
worn areas in the wiring insulation. Check for loose con-
nections at the control terminals. Air-clean as necessary.
Treat the control panel plugs with Clark 1801145”Lectric-
Like” Spray or Clark 1803827-brush on cleaner.
Hydraulic Compartment Inspection
Remove the floorplate.
Check the condition of all hydraulic system components,
hoses, piping, and connections. Check for wear, leakage,
and damage.
Remove the battery.
Inspect the drive motor, hydraulic pump motor power
cables. Check drive motor mounting fasteners. Check
hydraulic pump motor. Check pump motor mountings.
DANGER
!
HYDRAULIC FLUID PRESSURE: Do not
use your hands to check for hydraulic leak-
age. Fluid under pressure can penetrate your
skin and cause serious injury.
Brake Shoe and Drum Inspection
The brake linings, drum and adjustment setting can be
inspected without removing the drum or hub. Refer to
Group 23, Section 6 for inspection procedure.
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