Hydraulic Hand Pump
Care and Maintenance
Page 17
The Fluid Bag #12 requires tipping of approximately fifteen degrees (15°) to get past the internal
Hydraulic Relief Valve #8. If you hold the Fluid Bag #12 vertically it should not fall or slide off.
14. Rock the Fluid Bag #12 back and forth gently and pull it down until the Fluid Bag Seal Ring #12A is
exposed.
Any remaining hydraulic fluid will now easily pour out through the bleeder screw hole.
15. Slide the Fluid Bag Seal Ring #12A down and off of the Fluid Bag #12 with one hand while holding the
Fluid Bag #12 in place with the other.
16. Tip the Fluid Bag #12 approximately fifteen degrees (15°) and pull down and past the Hydraulic Relief
Valve #8.
To determine the direction to tip the Fluid Bag #12 is simple. With the Hydraulic Hand Pump in a
horizontal position and the Handle #10 on the top, you would tip the Fluid Bag #12 down.
17. Examine the hydraulic fluid and the inside of the Fluid Bag #12 for traces of product.
Small quantities of product are expected but if a large quantity is found the Piston Assembly #2
should also be repaired. See
“Piston Assembly Removal and Repair”
on page nineteen (19).
18. To be sure the Piston Assembly #2 is in its proper position repeat steps four (4), five (5), and six (6).
This completes the Fluid Bag #12 removal instructions.
If you are replacing the Hydraulic Relief Valve #8, see
“Relief Valve Replacement”
on page eighteen (18).
If you are replacing the Fluid Bag #12, continue the following instructions
“Fluid Bag Installation”
.
Fluid Bag Installation
If you intend to re-install a previously used Fluid Bag #12, it must be able to retain its normal shape. Carefully
inspect the outside surface and the sealing lip for signs of cracks and wear. Do not install if damage is apparent.
Thoroughly clean all debris that may have collected on the inside surface.
You must first complete the “
Fluid Bag Removal
” on page sixteen (16).
With the Hydraulic Hand Pump still in the pipe vise as previously instructed, follow these instructions.
1. Remove the bleeder cap screw and washer from Fluid Bag #12. Use a 5/8” wrench to secure the Fluid
Bag #12 and an Allen key to remove the bleeder cap screw.
2. Tip the Fluid Bag #12 approximately fifteen degrees (15°) in the same direction you previously
determined to remove it.
3. Place the opening of the Fluid Bag #12 over the Hydraulic Relief Valve #8 and tip the Fluid Bag #12
vertically as you push it up.
4. Rock the Fluid Bag #12 back and forth as you push up until the sealing lip of the Fluid Bag #12 is fully
inside the Pump Body #4A.
5. Slide the Fluid Bag Seal Ring #12A over the Fluid Bag #12 with the flat edge or face up until it is fully
inside the Pump Body #4A.
6. Slide the Fluid Bag Barrel #13 over the Fluid Bag #12; screw it into Pump Body #4A and tighten to
approximately 50 ft-lbs.
7. Remove the Hydraulic Hand Pump from the pipe vise; turn it over so the Fluid Bag #12 is up and place
the Fluid Bag Barrel #13 into the pipe vise.
To refill the hydraulic system, continue on from step eleven (11) in the “
Bleeding and Filling the Hydraulic
Fluid Bag
” on page fourteen (14).
