5. MAINTENANCE
fig.3
fig.4
5.1.
GENERAL
5.1.1.
Keep all items clean and lightly oiled. Keep all threads free
from grit and lubricate the ram regularly.
5.1.2.
Store the ram in the closed position to prevent piston surface
corrosion.
5.2.
TO CHANGE OIL in ram
IMPORTANT: The hydraulic system operates on a
specially formulated oil which must be replaced from
time to time. Use Sealey Hydraulic Jack Oil, available
from your authorised Sealey dealer. Quote model
number: HJO500MLS for 1 x 500ml bottle or PS982/OIL
for 15grms of oil for a single refill.
WARNING! Use of any other oil in ram may cause ram
to fail and will invalidate your warranty. Wear appropriate
eye, face and hand protection.
5.2.1.
Dismantle by removing the ram cover (fig.3.2) with soft jaw
grips (fig.3.A) (body may have to be held in a soft jaw vice,
ensure body thread is not damaged). Caution! The cover is
spring loaded, take care when removing. Carefully remove
components 2, 3, and 4 from the cylinder.
5.2.2.
Screw T-handle (fig.4.5) down as far as it will go, then
unscrew and remove it from the body (fig.4.5).
5.2.3.
Push a narrow screw driver (fig.4.9), or a rod of appropriate
diameter, down the small opening in head of ram (B), in order
to push components 6, 7, and 8, plus the oil, out of the main
cylinder. Note: A medium force may be required.
5.2.4.
Remove remaining oil from main cylinder, clean all components
and replace any showing signs of damage or wear.
fig. 6
6.1
MAINTENANCE OF EARLY MODELS.
Please note that earlier models of the
PS990
were filled with a hydraulic
grease.
WARNING!
Do not put oil into units
previously filled with grease as the
seals will be configured for grease only
and will leak if used with oil.
6.2
CONVERTING OLD UNITS TO OIL
The old type grease filled
PS990
can
be converted for use with oil by
replacing the internal components with
those supplied in the repair kit
shown on left Part No PS982/8002. Do
not mix old and new components. A
single 15grm refill of oil may be
obtained by quoting Part No.PS982/OIL
6. SERVICE PARTS & NOTES
5.2.5. Take small seal and piston (fig.5.7 & 8) and gently push them
down the narrow bore of the cylinder ensuring the metal piston
(8) is first, with the concave face pointing in the direction of the
T-handle, and the seal (fig.5.7) second, with the widest part of
the seal facing upwards towards the main cylinder (fig.5). Push
into bore as far as possible.
5.2.6. Pour 15grms of oil into the bore (fig.6). Insert larger seal (fig.7.6)
as shown, with the widest part of the seal facing downwards into
the bore. Push down into main cylinder as far as ‘X’ (fig.7)
followed by piston (fig.7.4) and spring (fig.7.3).
5.2.7. Refit (do not overtighten) ram cover (fig.7.2) and replace T-
handle (fig.7.5).
WARNING! The correct orientation of pistons and seals in
the ram is critical.
5.2.8. Screw T-handle into ram until it contacts small piston and
then turn a further two or three times.
5.2.9. Remove T-handle and firmly bounce the ram piston (fig.8) on a
hard, but non-damaging, surface 6 to 10 times to consolidate the
oil. Replace the T-handle, wipe
clean and the ram is ready for
use.
fig.7
fig.8
01284 757500
01284 703534
Sole UK Distributor
Sealey Group,
Bury St. Edmunds, Suffolk.
www.sealey.co.uk
Web
NOTE:
It is our policy to continually improve products and as such we reserve the right to alter data, specifications and component parts without prior notice.
IMPORTANT:
No liability is accepted for incorrect use of this product.
WARRANTY:
Guarantee is 12 months from purchase date, proof of which will be required for any claim.
INFORMATION:
For a copy of our catalogue and latest promotions call us on 01284 757525 and leave your full name, address and postcode.
PS980.V2 & PS985.V2 ISSUE No:1 17/12/08
fig.5
