Table 3-6. Unit Troubleshooting Table. -- Continued
Test or Inspection
TRANSMISSION WILL NOT SHIFT INTO HIGH/LOW RANGE. -- CONTINUED
Remove all jewelry such as rings, dog tags, bracelets, etc. If jewelry contacts battery terminal, a
direct short may result in instant heating of tools, damage to equipment, and injury or death to
Check for 24 Vdc at terminal C of pneumatic valve assembly (3) (refer to FO-3).
If 24 Vdc is not present at terminal C, go to Step 6.
If 24 Vdc is present at terminal C, go to Step 7.
Check for continuity on wire 393 between RANGE SHIFT switch (2) and pneumatic valve assembly (3)
(refer to FO-3).
Ensure air pressure is drained to 0 psi (0 kPa) before taking off any air components. If pressure is not
released, components could blow off and harm personnel. The IHMEE air system is pressurized to
119 psi (820 kPa). Do not drain air from a tank with any part of body in air spray path. Skin
embolisms and/or debris in eyes can occur from released pressure. Failure to comply may result in
injury or death to personnel.
Check for air pressure at port 1 on pneumatic valve assembly (3) (refer to FO-5).
If air pressure is present at port 1, replace pneumatic valve assembly (3) (Para 12-34).
If air pressure is not present at port 1, go to Fault 55.