5. MAINTENANCE
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 Hydraulic Jack Oil, available from your
authorised dealer.
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.
6.1
MAINTENANCE OF EARLY MODELS.
Please note that earlier models of the
Ram
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. 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.3
fig.4
fig. 6
fig.7
fig.8
fig.5