Preventive Maintenance; Troubleshooting Guide - OTC 5213 Manual De Instrucciones De Operación Y Lista De Partes

Parts List & Operating Instructions
CAUTION: Dirt is the greatest single cause of failure in hydraulic units. Keep the jack clean and well lubricated
to prevent foreign matter from entering the system. If the jack has been exposed to rain, snow, sand, or grit, it
must be cleaned before it is used. The use of alcohol, hydraulic brake fluid, detergent motor oil, or transmission
oil could damage the seals and result in jack failure. Use only approved hydraulic fluid (type HL or HM) with an
ISO grade cinematic viscosity of 30 cSt at 40° C or an Engler viscosity of 3 at 50° C.
1. When the jack is not is use, keep the piston and pump rods fully retracted. Store the jack on its base (in an upright
position) and in a well protected area where it will not be exposed to corrosive vapors, abrasive dust, or any other
harmful elements.
2. Visually inspect the jack before each use. Take corrective action if any of the following problems are found:
a. Cracked or damaged housing
b. Excessive wear, bending, or other damage
c. Leaking hydraulic fluid
d. Scored or damaged piston rod
Repair procedures must be performed in a dirt-free environment by qualified personnel who are familiar with this equipment.
Trouble
Erratic Action
Ram does not advance
Ram only extends partially
Ram advances slowly
Ram advances but doesn't
hold pressure
Jack leaks oil
Ram will not retract, or
retracts slowly
© Bosch Automotive Service Solutions LLC

Preventive Maintenance

e. Incorrectly functioning swivel heads or adj. screw
f.
g. Modified or altered equipment

Troubleshooting Guide

Cause
1. Air in system
2. Viscosity of oil too high
3. Ram sticking or binding
4. Internal leakage in ram
1. Release valve is open
2. Low/no oil in reservoir
3. Air locked system
4. Load is above capacity of system
1. Low oil level in reservoir
2. Piston rod is binding
1. Pump not working correctly
2. Leaking seals
1. Pump check valve not working
2. Ram seals are leaking
1. Worn or damaged seals
1. Release valve is closed
2. Reservoir too full
3. Ram damaged internally
Loose hardware
1. With jack sitting on its base and ram
retracted, bleed air from unit. See back of
page 1 of 1 to bleed air from the system.
2. Change to a lower viscosity oil.
3. Look for dirt, gummy deposits, leaks,
misalignment, worn parts, or defective
packing.
4. Take jack to authorized service
center for repair.
1. Close release valve.
2. Fill with oil to fill line & bleed system.
3. Bleed the system.
4. Use correct equipment.
1. Fill with oil to fill line & bleed system.
2. Look for dirt, gummy deposits, leaks,
misalignment, worn parts, or defective
packing.
1. Take jack to authorized service
center for pump repair.
2. Repair with seal kit No. 531127.
1. Take jack to authorized service
center for seal replacement.
2. Repair with seal kit No. 531127.
1. Repair with seal kit No. 531127.
1. Open release valve.
2. Drain oil to correct level.
3. Take jack to authorized service
center for repair.
Sheet No.
Issue Date: Rev. B, June 17, 2014
Form No. 530685
Solution
2 of 2