PDF Operation & Maintenance Manual Bobcat B850 & B950 Hydraulic Breaker - 25 MB
This manual provides essential operation and maintenance instructions for the Bobcat B850 and B950 hydraulic breaker attachments.
Following the guidelines within is crucial for ensuring both operator safety and the long-term durability of the equipment.
It covers important topics such as proper attachment procedures, daily checks, lubrication schedules, and routine service tasks.
This is a must-have document for anyone who operates or maintains these powerful and productive tools.
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--- Page 1 ---
Hydraulic
Breaker
B850
B950 Operation
&
Maintenance
Dealer Copy -- Not for Resale
Manual
S/N 794000101 & Above
S/N 797000101 & Above
Doosan purchased Bobcat Company from Ingersoll-Rand Company in
2007. Any reference to Ingersoll-Rand Company or use of trademarks,
service marks, logos, or other proprietary identifying marks belonging
to Ingersoll-Rand Company in this manual is historical or nominative
in nature, and is not meant to suggest a current affiliation between
Ingersoll-Rand Company and Bobcat Company or the products of
either.
6901134 (9-05) Revised (5-12) ©Bobcat Company 2005
Printed in U.S.A.
1 of 80
--- Page 3 ---
PARTS IDENTIFICATION AND MACHINE SIGNS (DECALS) (CONT’D)
Excavator Mount
Bit
6727330
X-Change Mount
6727330
B850/B950 Hydraulic Breaker
VII Operation & Maintenance Manual
--- Page 4 ---
OPTIONS HOSE INSTALLATION
Figure OI-1 The breaker is supplied without the hoses and couplers
installed on the breaker.
Figure OI-2
4
2
3
P9777 1
The Loader must be equipped with front auxiliary P-26485
hydraulics [Figure OI-1].
Warranty on this attachment is void if used on a non- There are two high pressure port s (Item 1 & 2) and two
approved carrier. See your Bobcat dealer for an return ports (Item 3 & 4) [Figure OI-2] on the breaker
updated list of approved carriers. housing.
The following Loaders are a pproved for use with the Do Not use the ports (Item 2 & 4) [Figure OI-2].
B850 Hydraulic Breaker; 553 (S/N 52031 1001 And
Above Only), 751, 753, 763, 773, 863 (F Series), 864, The port marked HP (Item 1) [Figure OI-2] will be
873 (F Series), A205, S130 , S150, S160, S175, S185, connected to the breaker hose with the male coupler.
S205, T140, T180 and T190.
The port marked LP (Item 3) [Figure OI-2] will be
The following Loaders are a pproved for use with the connected to the breaker hose with the female coupler.
B950 Hydraulic Breaker; 763, 773, 863, 864, 873, A205,
A220, A300, S150, S160, S175, S185, S205, S220,
S250, S300, T180, T190, T200, T250 and T300.
The following Excavators are approved for use with the
B850 Hydraulic Breaker; 325, 328, 331, 331E, 334 and
430.
The following Excavators are approved for use with the
B950 Hydraulic Breaker; 3 31, 331E, 334, 337, 341, 430
and 435.
NOTE: A special application kit is available for
Loaders and Excavators and is recommended
for use with the hydraulic breaker. See your
Bobcat dealer for availability.
The B850/B950 Hydraulic Breaker does not need a direct
to tank return for proper hydraulic operation. If the
Excavator is equipped with a direct to t ank valve, the
direct to tank option may be used.
B850/B950 Hydraulic Breaker
OI-3 Operation & Maintenance Manual
--- Page 5 ---
HYDRAULIC BREAKER INSTALLATION AND Figure OI-31
REMOVAL ON LOADERS (CONT’D)
Installing The Hydraulic Breaker On The Loader
Mount (Cont’d)
Figure OI-29
1
1
P18845
Route the hoses through the front hose guide (Item 1)
[Figure OI-31] on the mount.
P18848
Install the plate (Item 1) [Figure OI-29].
Figure OI-30
1
P18847
Install the bolts (Item 1) [Figure OI-30].
Tighten the bolts to 125-140 ft.-lbs (170-190 Nm) torque.
Re-torque the bolts after every eight hours of operation.
NOTE: Do Not over torque the bolts (Item 1) [Figure
OI-30]. Over torquing may cause bolt or
thread damage or could result in the bolts
breaking during operation.
B850/B950 Hydraulic Breaker
OI-13 Operation & Maintenance Manual
--- Page 6 ---
HYDRAULIC BREAKER INSTALLATION AND Figure OI-58
REMOVAL ON EXCAVATORS (CONT’D)
Installing the Hydraulic Breaker Using The X-Change
System (Cont’d)
Figure OI-56
1 1
P-21066
Pull the lever (Item 1) [Figure OI-58] away from the
machine, to unlock the latch. Remove the tool.
P-21060 Figure OI-59
Route the hoses up the arm and connect them to the
auxiliary couplers (Item 1) [Figure OI-56]. (See Page 2
18.)
Removing The Hydraulic Breaker From The
Excavator With The X-Change System
1
Select a flat level surface. Put the breaker on the ground.
Stop the Excavator.
Relieve hydraulic pressure (see p age OI-27) and
disconnect the hoses from the auxiliary quick couplers.
(See page OI-18.)
P-21059
Figure OI-57
Start the Excavator, lift the boom approximately one foot,
and extend the bucket cylin der until the X-Change pins
(Item 1) engage the hooks (Item 2) [Figure OI-59] on the
breaker.
1
P-21065
Install the X-Change tool (Item 1) [Figure OI-57] in the
latch.
B850/B950 Hydraulic Breaker
OI-23 Operation & Maintenance Manual
--- Page 7 ---
TRANSPORTING THE HYDRAULIC BREAKER
(CONT’D)
Excavators
Figure OI-83
N-23827
Figure OI-84
N-23826
Fasten the chains to the Breaker [Figure OI-83], [Figure
OI-84].
Use chain binders to prevent the Breaker from moving
during transport.
Secure the hydraulic hoses to the Breaker.
See the correct loader operation and maintenance
manual for TRANSPOR TING THE BOBCA T
EXCAVATOR to properly chain the loader to the transport
vehicle.
B850/B950 Hydraulic Breaker
OI-33 Operation & Maintenance Manual
--- Page 8 ---
NITROGEN CHAMBER (CONT’D) Checking The MP Nitrogen Chamber Charge
Pressure
Charging The HP Nitrogen Chamber (Cont’d)
Figure PM-14
WARNING
Wear safety glasses to prevent eye injury when any
of the following conditions exist:
1 • When fluids are under pressure.
• Flying debris or loose material is present.
• Engine is running.
• Tools are being used.
W-2019-1285
Use the nitrogen accumulator charge pressure gauge
MEL1523B to check pressure.
P18875 Figure PM-15
Install and tighten the plug (Item 1) [Figure PM-14].
1
P18887
Remove the plug (Item 1) [Figure PM-15].
B850/B950 Hydraulic Breaker
PM-9 Operation & Maintenance Manual
--- Page 9 ---
INSPECTION (CONT’D) Weekly Inspection
Loader Mount Inspection Figure PM-49
Figure PM-47
2
1
1
P18861
1 1
P18026
Inspect both ends of the bit (Item 1) [Figure PM-49] for
damage and/or cracks. R eplace the bit if damaged or
Inspect the Bob-Tach wedge mounts (Item 1), mounting worn.
flange (Item 2) [Figure PM-47], and all welds on the
breaker mount for wear and damage each time the Figure PM-50
breaker is removed from the Loader.
Excavator Mount Inspection
Figure PM-48
1
1
1
P18867
Inspect the bit retainer pins (Item 1) [Figure PM-50] and
retainer areas for damage and/or wear. Replace the pins
P18880
if damaged or worn.
Inspect the X-Change mount (Item 1) [Figure PM-48]
and all welds on the breaker mount for wear and damage
each time the breaker is removed from the Excavator.
B850/B950 Hydraulic Breaker
PM-19 Operation & Maintenance Manual