DALBO 77124, Manual, Page: 26 / 29

TRIMAX Plus
Page 26
Replacing gasket set for hydraulic stone protector
Fig. 15
1.
Drain oil from cylinder by moving ram carefully backwards and forwards.
2. Extend ram to centre position. Unscrew upper part (pos. 3) from cylinder
tube (pos. 1). Use special tool to remove upper part. If upper part is
stuck, heat front of sleeve. When upper part is detached from cylinder
tube, pull ram up towards upper part and remove the ram (pos. 2) from
the cylinder tube (pos. 1).
3. Remove ram backwards from the upper part, giving access to the gasket
set in the upper part.
4. Remove metal ring (pos. 8) from ram shaft.
5. Remove gaskets (pos. 4+5+6+7) from upper part.
6. Clean all parts and check for particles etc. Check for rust around scraper
ring (pos. 4) in upper part. If detected, remove thoroughly. The ram shaft
must also be absolutely clean.
Assembly
1. Fit new gaskets in upper part, and new metal ring on ram shaft.
2. Lubricate thread in upper part (pos. 3) and apply (hydraulic) oil to gaskets
and ram shaft to ease fitting.
3. Fit upper part (pos. 3) on ram shaft (pos. 2) by pushing the ram shaft
through the upper part from the inside, with the eye first.
4. Lubricate the inside of the cylinder tube with oil. Push ram into centre
position.
5. Screw on and tighten the upper part.
6. Fit cylinder. Connect hoses. Check hoses are not pinched and that con-
nections are tight.
Replacing shaft, bearings and T-rings
Lower machine to the ground. Support the trailing bar if necessary.
Prevent the machine from rolling before removing bearing bolts.