BlueBird Kaydee Kaddy - Manual (Page 9)

9
MAINTENANCE
Hydraulic Jack:
1. Never carry jack by ram or upside-down, this
will cause air under plunger.
2. Always use only top grade hydraulic oil, never
use brake fluid!
3. Always insure proper level of hydraulic fluid.
Do not overfill reservoir! This will render jack
inoperative. Oil should only be filled to the filler
plug. If you should overfill, simply stand jack
upright and remove filler plug and allow excess
oil to drain from jack through the filler plug. The
correct oil level is up to the filler plug.
4. Do not store jack outside.
5. Inspect periodically to insure no moisture or
water has collected in jack. Rust will destroy
your jack.
6. Abusive handling may cause damage to the
jack. Always handle with care.
7. Load test your lift periodically to insure jack
bypasses at specified load limit. Determine load
limit of your lift, attach a weight equal to 100 lb.
greater than load limit. Lift should not lift load. If
lift does lift load, replace safety bypass valve
immediately, do not adjust, bypass valve is
set at factory.
Proper maintenance and handling of your hydrau-
lic jack will insure many years of service. Here are
a few tips in the care and maintenance of your
jack.
To Bleed Air From Jack:
(Refer to parts lists for part identification.)
1. Remove jack from lift, lay jack on bench with
release valve handle in the up position.
2. Remove housing assembly (part # 4330). Use
caution when removing housing assembly so
as not to lose spring (part # 4359) located just
beneath housing, remove spring.
3. The large ball (part # 6048) is located just un-
der the spring. Using a 5/16 x 3” long or longer
bolt. (We do not recommend the use of a hard-
ened bolt or drift punch, these will damage the
ball.) Position bolt on top of ball as close to the
center of the ball as possible and strike firmly
with a 1 lb. hammer, The amount of force to
reseat the ball would similar to striking a 16
penny nail with a hammer. This action should
have caused a new seating ring for the ball.
4. Replace the spring and reinstall the housing
assembly.
It is always wise to check and bleed the jack of air.
Test jack for proper function and repeat process if
necessary.
Reseating the Large Ball Check:
1. Remove jack from lift. Open release valve
(item 18) and actuate pump (item 22) approxi-
mately 10 complete strokes.
2. Close release valve (item 18), actuate pump
(item 22) until plunger (item 4) rises 8-10”.
3. Turn jack upside down, open release valve
(item 18) push plunger (item 4) back to re-
tracted position.
4. Close release valve (item 18) while holding
plunger (item 4) turn right side up.
5. Repeat this process until all air is removed from
jack.
6. Remove filler plug, check proper level of hy-
draulic fluid.