Dawson HPH 1200, Руководство пользователя

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4.0 HAMMER MAINTENANCE (SEE APPENDIX 7.1)
4.1 Daily maintenance checks (or every 10 hours)
a. Apply Lithium based general purpose grease to hammer through each one of five grease points
(part 1-057-00-01). Ten operations of a grease gun on each grease point every shift will be
adequate. If the hammer is working particularly hard grease more frequently.
b. Check all external fasteners for tightness and re-tighten where necessary.
c. Check that the dolly (part 1-006-00-06) has not been damaged or worn beyond its
serviceable limit. If the dolly is replaced, ensure that the O' ring is replaced with it (part
1-067-00-01.)
To inspect the dolly, remove eight screws (part 1-034-00-01) and drop the leg inserts
(1-019-00-01 and 1-020-00-01) down far enough to view the dolly. If the dolly is compressed
past it's serviceable limit i.e. 30mm of wear, or if the dolly is cracked or melted replace it.
To replace the dolly insert a steel bar through one of the holes in the bottom of the anvil (part
1-005-00-01) and drive the old dolly out using a hammer. Insert a new dolly (complete with O'
ring) ensuring that it is pushed fully home.
d. Check the suspension blocks (part 1-025-00-01) and suspension ring (part 1-024-00-05) for
wear/damage and replace if necessary. These must be in good condition at all times. These
items act as the hammers 'suspension system'
reducing the shock transmitted from the blow to
the hammer and its components - very important for keeping the hammer functioning correctly.
e. Check the condition of lifting tackle and lifting points prior to being taken into service.
4.2 Planned 125 hour maintenance checks (run the hammer for 15 minutes before and after
this maintenance work)
Every 125 hours the following work should be carried out in addition to that described in 4.1
above:-
a. Remove each hammer leg guide in turn and check the condition and tightness of: all hydraulic
hoses and fittings; bolts; locking rings, and visually check all components for condition.
b. Check the condition of each sensor assembly paying particular attention to cam wear, roller
operated valve travel and tightness of fixing bolts. Each roller valve should have a travel of
4mm through full actuation of its associated cam. This measurement is critical and if it is not
achieved the hammer will not run correctly (as with the ignition timing on a motor car). Travel
can be lost through excessive cam wear or with wear on the roller or roller pin at the end of the
valve.
c. Check the condition of leg inserts to ensure correct fitting on pile sections. The inner faces of
each insert should touch the opposite insert. If not, the wear faces may require building up with
hard facing.