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Operation (Continued)

4. After all securing bolts are properly 

fastened, open the release valve by 
turning release knob counter-clockwise 
to lower the jack to minimum height.

Avoid shock loads 

created by quickly 

opening and closing the release valve as 

the load is being lowered.  Shock loads can 

create dangerously high operating 

pressures within the hydraulic system, 

causing system failure and resulting in 

personal injury and/or property damage.

Maintenance

Use only a good 

grade hydraulic jack 

oil.  Avoid mixing types of oil.  Do not use 

break fluid, alcohol, glycerin, motor oil etc..  

Improper fluid can cause serious internal 

injury to the jack, rendering it inoperative.

ADDING OIl

1. Position the jack on level ground with 

saddle fully lowered, remove oil filler 
screw.

2. Oil level should be within 

3

/

8

” of filler 

hole.  DO NOT OVERFILL.  If overfilled, 
the jack will not lower to published 
minimum height.  If underfilled, the jack 
will not reach published maximum 
height.  Adjust fluid level as needed.  
Always reinstall oil filler screw before 
use.

CHANGING OIl

1. For best performance and long unit, 

replace the complete oil supply at least 
once a year.

2. To drain the oil, remove the filler screw.
3. Lay the jack on its side and allow the oil 

to run out into suitable drain pan.  
Dispose of in accordance with local 
regulations.

4. BE CAREFUL to prevent dirt or foreign 

matter from entering the system.

5. Refill with proper oil (we recommend 

Mobil DTE 13M or equivalent) as 
described above.

NOTE:

 Dispose of hydraulic fluid in 

accordance with local regulations.

lubRICATION

Add lubricating oil to all pivoting sections 
every 3 months.

PREVENTING RuST

1. Check ram and piston periodically for 

signs of corrosion.  Clean as needed 
with an oily cloth.

2. When not in use, store jack with saddle 

and piston fully retracted.

2

Westward Operating Instructions and Parts Manual

Westward  Heavy Duty Transmission 

Jack

®

1VW35

Troubleshooting Chart

Jack will not lift load 

1. Release valve not tightly closed 

1. Ensure release valve tightly closed

   

2. Overload condition 

2. Remedy overload condition

Jack bleeds off after lift 

1. Same as above 

1. Same as above

   

2. Hydraulic unit malfunctioning 

2. Replace hydraulic unit

Jack will not lower after unloading 

1. Reservoir overfilled 

1. Drain fluid to proper level

   

2. Linkages binding 

2. Clean and lubricate moving parts

Poor lift performance 

1. Fluid level low 

1. Ensure proper fluid level

   

2. Air trapped in system 

2. With ram fully retracted, remove oil  

 

 

    filler screw to let pressurized air    

 

    escape, reinstall oil filler screw

Will not lift to full height 

Fluid level low 

Ensure proper fluid level

Symptom 

Possible Cause(s) 

Corrective Action

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