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7.7. Bracket and Adapter
Check the bracket and the adapter installed at the top, whenever the chisel is replaced or at least 4 times a
year, to see if there are any cracks. If any crack is found out, the breaker must not be used until it is repaired.
If the bottom of the bracket is worn away, replace the bottom plate as needed.
If it is necessary to repair by welding, contact your local PRODEM dealer for advice.
7.8. Screw tightening
On percussive tools such as hydraulic hammers, the screw fasteners are subjected to particularly high loads
and extreme vibration. During the first 50 operating hours the screw fasteners on the hammer must be
checked daily, and thereafter once a week. Tighten any loose screws taking care not to exceeding the
specified tightening torque below.
Screws to check and/or re-tighten regularly:
Applied part
Hex. size
mm
Tightening Torque
Applied hammer models
N·m (ft·lbs)
Accumulator body
17 (socket)
500 ~ 550 (370 ~ 410)
PRB170 ~ 500
Accumulator cover
14 (socket)
250 ~ 300 (185 ~ 220)
PRB170
Through bolts
22
280 ~ 300 (200 ~ 220)
PRB008
30
400 ~ 450 (300 ~ 330)
PRB010, 020
36
450 ~ 500 (330 ~ 370)
PRB030
41
800 ~ 850 (590 ~ 630)
PRB040(H), 050
50
950 ~ 1050 (700 ~ 770)
PRB060, 100
55
1500 ~ 1600 (1110 ~ 1180)
PRB150
60
2400 ~ 2500 (1770 ~ 1850) PRB170
65
2400 ~ 2500 (1770 ~ 1850) PRB200, 250
71
3400 ~ 3600 (2500 ~ 2650) PRB700
75
3400 ~ 3600 (2500 ~ 2650) PRB300
85
4200 ~ 4400 (3100 ~ 3250) PRB400
90
4900 ~ 5100 (3600 ~ 3750) PRB500
Side bolts
on the bracket
NA
Version
27
280 ~ 320 (200 ~ 230)
PRB008
30
300 ~ 350 (220 ~ 260)
PRB010, 020, 030
41
550 ~ 600 (400 ~ 440)
PRB040(H)
46
850 ~ 950 (630 ~ 700)
PRB050
Mounting
adapter
19
100 ~ 120 (75 ~ 90)
PRB008, 010, 020, 030
30
550 ~ 600 (410 ~ 440)
PRB040(H), 050, 060, 100, 150
46
800 ~ 1000 (590 ~ 740)
PRB170, 200, 250, 300
55
1000 ~ 1200 (740 ~ 890)
PRB400, 500, 700
