Sealey SM16/1 Instructions page 4

5.5. Hydraulic pump - oil change
5.5.1 The oil in the hydraulic pump should be changed every 6 months.
5.5.2. Remove the six self tapping screws in the guard, fig.1.C and fold it down.
5.5.3. Remove the cotter pin, fig.6.A and the compression arm retaining pin, fig.6.B.
5.5.4. Lift off the compression arm, fig.6. C.
5.5.5. Remove the cotter pin, fig.6. D and the swing bolt retaining pin, fig.6.E.
5.5.6. Loosen the two hydraulic pump retaining bolts, fig.6.F and lift out the hydraulic
pump.
5.5.7. Undo the four screws in the hydraulic pump top plate (not shown), lift the plate off
and empty the oil into a suitable container and dispose of according to local
regulations.
5.5.8. Refill the pump with oil.
Note: Use a good quality jack oil, such as SEALEY HYDRAULIC JACK OIL.
5.5.9. Assembly and fitting instructions are the reverse of paragraphs 5.5.2. to 5.5.7. above.
5.6. Bow saw & saw arm adjustment
5.6.1. Play between the bow saw and the saw arm can be removed by adjusting the three
tensioning bolts shown in fig.7.
5.6.2. Loosen the three lock nuts and tighten the tensioning bolts until the play has been
removed.
5.6.3. Tighten the three lock nuts.
Note: Do not over tighten the tensioning bolts as this will cause excessive wear.
5.7. Vibration
5.7.1. If the saw arm shakes, vibrates excessively or apears otherwise insecure it may be
necessary to tighten the support frame,fig.8 to the gear shaft or tighten the saw
arm to the support frame fig.9.
5.7.2. To tighten the support, remove the six self tapping screws in the guard, fig.1.C and
fold it down.
5.7.3. Loosen the lock nuts and tighten the bolts fig.8 such that any movement on the gear
shaft is significantly reduced.
5.7.4. Tighten the lock nuts.
5.7.5. Fold the guard into position and refit the six screws removed in paragraph 5.7.2.
Note: Do not over tighten the bolts as this will cause excessive wear.
5.7.6 To tighten the support, remove the six self tapping screws in the guard, fig.1.C and
fold it down.
5.7.7. Loosen the outer lock nut, fig.9, tighten the inner lock nut and tighten the outer lock
nut.
5.7.8. Fold the guard into position and refit the six screws removed in paragraph 5.7.6.
5.7. Adjusting rate of decent of the saw arm
5.7.1. The rate of decent of the saw arm can be adjusted by altering the effective length of
the compressing bracket.
5.7.2. Remove the six self tapping screws in the guard, fig.1.C and fold it down.
5.7.3. To increase the rate of decent of the saw arm, loosen lock nut “A”, fig.10, and
tighten lock nut “B”, fig.10 shortening the effective length of the compressing
bracket.
5.7.4. To decrease the rate of decent of the saw arm, loosen lock nut “B”, fig.10 and
tighten lock nut “A”, fig.10 increasing the effective length of the compressing
bracket.
5.7.5. Fold the guard into position and refit the six screws removed in paragraph 5.7.2.
Note: Fine adjustment of the rate of decent of the saw arm is possible using the fine
adjuster, fig.11, on the hydraulic pump (SM18/1 only).
Fig.10.
Fig.6.
Fig.7.
Fig.8.
Fig.9.
Fig.11.