Erskine Attachments 18HDRS User manual

Heavy Duty Rock Saw
18HDRS & 24HDRS
For
Skid Steer Loaders
Operator’s Manual
Maintenance and
Parts Information
Read this manual before use.
Some dust created by power sanding, sawing, grinding, drilling, and other
construction activities contains chemicals known to the State of California to cause cancer, birth
defects or other reproductive harm. Some examples of these chemicals are:
Lead from lead based paints,
Crystalline silica from bricks and cement and other masonry products, and
Arsenic and chromium from chemically treated lumber.
Your risk from these exposures varies, depending on how often you do this type of work. To reduce
your exposure to these chemicals: work in a well ventilated area, and work with approved safety
equipment, such as those dust masks that are specially designed to filter out microscopic particles.

2
NOTE: Erskine Attachments LLC reserves the right to make
improvements in design or changes in specifications at any time without
notice and without incurring any obligations to install them on units
previously sold.
TABLE OF CONTENTS
REFERENCE INFORMATION
Write the serial number for your attachment in the spaces below. Always refer to this serial
number when calling for service or parts.
Serial Number…………..
YOUR ATTACHMENTS DEALER
ADDRESS:
PHONE:
CONTACT:
SAFETY
3 –4
SERIAL NUMBER/DECAL LOCATION
5 –6
MOUNTING INSTRUCTIONS
7 –8
OPERATING INSTRUCTIONS
9 –10
ROUTINE MAINTENANCE
11 –17
PARTS INFORMATION
18 –29
GENERAL SPECIFICATIONS
30
BOLT TORQUE
31
TROUBLESHOOTING
32 –34
WARRANTY
35

3
The user is responsible for inspecting the machine
daily, and for having parts repaired or replaced when
continued use of the machine would cause damage,
excessive wear to other parts or make the machine
unsafe for continued operation.
If an operating procedure, tool device, maintenance
or work method not specifically recommended is
used; you must satisfy yourself that it is safe for you
and others. You must also ensure that the
attachment will not be damaged or made unsafe by
the procedures you choose.
Erskine Attachments LLC cannot anticipate every
possible circumstance that might involve potential
hazard. The safety messages found in this manual
and on the machine are therefore not all inclusive.
The signal words CAUTION, WARNING, or
DANGER are used to indicate hazards

Indicates a potentially
hazardous situation which, if not avoided,
may result in minor or moderate injury.

Indicates a potentially
hazardous situation which, if not avoided,
could result in death or serious injury.

Indicates a potentially
hazardous situation which, if not avoided,
will result in death or serious injury.


The word IMPORTANT is used in the text when
immediate damage will occur due to improper
technique or operation.
The word NOTE is used to convey information that
is out of context with the manual text; special
information such as specifications, techniques,
reference information, and other information of a
supplementary nature.
SAFETY
DO NOT use or perform maintenance on this machine until this manual has been
read and understood. In addition, read the Operation and Maintenance Manual(s)
pertaining to the attachment and the attachment carrier (“Loader”).

4
Improper operation can cause serious
injury or death.
Pre-operation
This attachment is designed for trenching through
cement, asphalt, and rocky soil conditions.
NEVER use this machine for any other purpose.
Read the operators manual for the “Skid Steer
Loader.”NEVER allowuntrained peopleto operate.
Operating instructions must be given to everyone
before operating this attachment and at least once
a year thereafter in accordance with OSHA
regulations.
NEVER exceed the maximum recommended input
power or speed specifications for the attachment.
Over-powering or over-speeding the attachment
may cause personal injury and/or machine
damage.
Keep all shields, guards, and covers in place.
Do not modify equipment or add attachments that
are not approved by Erskine Attachments LLC.
Use adequate safety warning lights and devices as
required by local regulations. Obey all local laws
and regulations regarding machine operation on
public property. Always call before you dig (1-888-
258-0808). When you call, you will be directed to a
location in your state/city for information about
buried lines (electric, telephone, cable TV, water,
sewer, gas, etc.).
Operation
Milling concrete and asphalt can release dust
containing silica. According to OSHA, exposure to
silica can result in respiratory diseases (affecting
your ability to breath), including silicosis, lung
cancer, and kidney disease. Refer to OSHA for
more information about controlling exposure to
silica. Occupational use of this attachment may be
subject to OSHA regulations specific to respirable
silica.
To protect the operator from hearing loss, ear
protection is required unless the loader is equipped
with a noise reduction cab that meets OSHA
1910.95 standard.

SAFETY
Operation (continued)
Keep people away from loader, attachment and
discharge when in use. This attachment sends
objects flying and has rotating parts.
NEVER operate near embankments or terrain that is
so steep that rollover could occur.
Always stay in the operator position when using the
attachment.
Before leaving the operators position, disengage
hydraulic drive, lower the attachment to rest flat on
the ground, stop engine, set park brake, and wait for
all motion to stop.
NEVER place head, hands, feet, or objects in the
discharge area or clear debris while engine is
running.
Avoid High Pressure Fluids Hazard

Escaping fluid under pressure can
penetrate theskin causing serious injury.

Avoid the hazard by relieving the
pressure before disconnecting hydraulic
lines.
Use a piece of paper or cardboard, NOT BODY
PARTS, to check for suspected leaks. Wear
protective gloves and safety glasses or goggles
when servicing or performing maintenance on
hydraulic systems.
If an accident occurs, see a doctor immediately.
Any fluid injected into the skin must be surgically
removed within a few hours or gangrene may
result.
Maintenance

NEVER
make adjustments, lubricate, clean, or
perform any service on the machine while it is in
operation.
Make sure the attachment is serviced on a daily
basis. Improper maintenance can cause serious
injury or death in addition to damage to the
attachment and/or your equipment.

5
SERIAL NUMBER AND SAFETY DECAL LOCATIONS
Serial Number Location:
It is important to refer to the serial number of your attachment when making repairs or ordering parts. Early or later
models (identification made by serial number) may use different parts, or it may be necessary to use different
procedures in doing a specific operation. Serial number plate is located on the upper right side step.
Part Number: Model Decal
319455 –18HDRS
319456 –24HDRS
Location: Each side of rotor w/a
Quantity: 2

6
SERIAL NUMBER AND SAFETY DECAL LOCATIONS
Safety Decals Locations:
The locations of the safety decals are shown. If these
decals are missing, damaged, or painted over they
must be replaced. Call Erskine Attachments LLC
(218-435-4045) for replacement decals.
Part Number: 319438
Location: On each side of rotor shield
Quantity: (1) in PMI & (1) in
Rotor decal package
Part Number: 200001
Location: Top of mount over valve
Quantity: 1
Part Number: 314875
Location: Top of mount over valve
Quantity: 1
Part Number: 319439
Location: On RH of rotor Shield
Quantity: 1
Large Brand Decal
Location: Each side of rotor w/a
Quantity: 2
A
B
C
E
D
Part Number: 318968 (18”) 318969 (24”)
Location: On depth tube
Quantity: 1
F
Small Brand Decal
Location: On Support Leg Brace
Quantity: 1
Part Number: 314890
Location: on RH side of mount frame
Quantity: 1

7
MOUNTING INSTRUCTIONS
After uncrating the attachment, use the following procedure to mount the Heavy Duty Rock Saw to the loader.
WARNING! Coupler wedges or pins must extend through the holes in the attachment
mounting plate. Levers must be fully down and locked. Failure to secure wedges or
pins can allow attachment to come off and cause injury or death.
1. Use the step, treads, and grab handles to get on
and off the loader and rock saw.
2. Sitting in the operator’s seat, lower seat bar and
fasten the seat belt.
3. Drive the loader to the rear of the attachment.
Put the loader quick attach coupler into the
attachment mounting bracket.
4. Tilt the loader coupler backward a small amount
until it is fully engaged in the attachment’s
mounting bracket.
5. If equipped, engage the coupler locking
mechanism that attaches the attachment to the
loader.
6. Stop the engine and engage the park brake.
7. Secure the coupler locking mechanism that
attaches the attachment to the loader.
Mounting Plate Connections
Coupler Locking Mechanism
Mounting Plate Connections
Mounting Plate Step Treads

8
MOUNTING INSTRUCTIONS
8. Connect the hydraulic quick couplers from the
attachment to the loader.
IMPORTANT: Make sure the quick couplers
are fully engaged. If the quick couplers do not
fully engage, check to see that the couplers are
the same size and brand. Do not force the
quick couplers together.
IMPORTANT: Wipe the ends of the hydraulic
quick couplers (both lead and loader) with a rag
to remove any possible contamination.
Contamination can cause hydraulic
components to fail and is not covered under
warranty.
NOTE: See the Loader’s Operation and
Maintenance Manual.
NOTE: Attachment is shipped with 12FJX (1-
1/16” Female JIC Swivel) fittings on the ends of
the lead hoses and a 6FJX (9/16” Female JIC
Swivel)fitting on theend of the casedrain hose.
9. Connect the wire harness to the loader’s wire
harness receptacle. (Disregard if a pistol grip
controller is supplied with the attachment.)
Make sure the hoses are properly routed to fit
your specific loader. If the hoses are not routed
correctly, hoses may get pinched or rub on
tires. Be sure to check the hose routing through
the full range of intended motion of the
attachment before operating it.
More than one routing may be acceptable
depending on the loader. Pick the routing that
best suits your loader.
IMPORTANT: Proper hose routing is the
responsibility of the owner and/or operator.
Pinched or stretched hoses are not covered
under warranty.
NOTE: Make sure the pressurized hose from
the skid steer is routed to the “P” port of the
valve block. If not the attachment will not
operate properly.
Mounting is now complete and you are ready to use
the attachment. Use the above instructions in a
reverse order to dismount the attachment from the
loader.
14 Pin Wire Harness Connection
Hydraulic Connections
Rock Saw Ready for Operation

9
OPERATING INSTRUCTIONS
Rock Saw Precut Setup
NOTE: Make sure to understand how the controls of
the skid steer will interact with the functions of the
rock saw attachment prior to operating. (If pistol grip
harness applies, see image to the left for proper
operation.)
1. In the operator’s seat of the loader, seat belt
fastened and seat bar lowered (if so equipped),
start the engine.
2. Roll the skid steer arms fully back and raise the
cutter head 6 to 8 inches off the ground.
3. At low engine idle speed, activate the high flow
auxiliary hydraulic system, and engage the oil
flow in the reverse direction.
NOTE: The rock saw cutter head is designed not
to rotate when the oil flow is activated in the
reverse direction, although a small amount of
rotation may be seen with some loaders.
4. Increase the loader engine speed to medium idle.
5. Move the cutter head left or right using the
appropriate electric controls until it is in the
desired position. (Use the guide roller for
positioning if needed.)
IMPORTANT: Rock saw cutter head must be
raised above the ground while operating the side
shift feature or damage to the attachment may
occur.
NOTE: Set the cutter head as close to the
centerline of the loader as possible, but also
consider the position of the spoil deflector. It is
best to position the spoil deflector so that the
discharged spoil is pushed clear of the path of the
loader’s tires or tracks.
6. Raise the front skid shoes using the appropriate
electric controls until the depth of cut indicator
seen to the left reads the desired depth.
NOTE: The depth should be read at the top edge
of the white indicator. (Depth of cut ranges from
0 to 18 inches on the 18HDRS and 0 to 24 inches
on the 24HDRS.)
7. Disengage the auxiliary hydraulic oil flow and
reduce the engine speed to low idle.
Pistol Grip Harness Control
Support
Legs Up
Support
Legs Down
Shift Left
Shift Right
Depth of Cut Indicator

10
OPERATING INSTRUCTIONS
Operation
To avoid injury or death from tipover,
never use attachment on an incline.
To avoid injury or death, carry
attachment as low as possible.
NOTE: If using the guide roller be sure to place it onto
the ground prior to climbing in the skid steer.
1. In the operator’s seat of the loader, seat belt
fastened, and the seat bar lowered (if so
equipped), start the engine.
2. Roll the skid steer arms fully back and raise the
cutter head 6 to 8 inches off the ground.
3. At low engine idle speed, activate the high flow
auxiliary hydraulic system, and engage the oil flow
in the forward direction to start the cutter head
rotation.
NOTE: Certain loaders may not operate in high
flow mode without a special wire harnesses.
Others require the control switches to be operated
in a specific way. It may also be necessary to
switch the hose couplers around to match your
loader. (See the loader’s operation and
maintenance manual.)
4. Increase the loader engine speed to high idle.
5. With the loader boom lowered completely and the
rollers firmly on the ground, slowly rotate the loader
coupler forward until the cutter head penetrates the
surface.
6. Continue rotating the loader coupler forward until
the Rock saw rollers and skid shoes are firmly on
the ground. (The front of the loader should be
elevated 2 to 4 inches during the plunge cut.)
7. Once the desired depth has been reached, start to
move forward with the loader, increasing the speed
until an optimal cut speed is reached.
Proper Cut Positioning
Rock Saw Guide Roller
NOTE: For optimal performance, keep the rear
rollers and front skid shoes on the ground at all times
with the front tires of the skid loader elevated 2 to 4
inches. Transferring the loader weight to the
attachment will result in a faster, smoother, and
more efficient cut. (Track loaders tend to perform
better with the entire length of track on the ground.)
NOTE: If the cutter head rotation stalls; stop or
reverse the direction of the loader and allow the
cutter head to return to full operating speed before
continuing.
Picks may be hot after operation.
To avoid burns, allow the picks to cool before
inspecting.

11
ROUTINE MAINTENANCE
WARNING: Lower the rock saw to rest on the skid shoes and rollers, shut down the engine,
relieve the hydraulic pressure to the attachment, wait for all motion to stop, and set park brake
before leaving the operator’s seat to perform service of any kind.
It is the operator’s responsibility to make daily inspections of the attachment and loader for damage, loose bolts,
fluid leaks, or anything else that could cause a potential service or safety problem. Preventive maintenance is
the easiest and least expensive type of maintenance.
IMPORTANT: Bolts and set screws can loosen after initial usage. After the first hour of operation check all bolts
and set screws.
This must also be done daily before operation. If nuts or bolts are missing or damaged, replace
immediately.
INSPECTION & SERVICE SCHEDULE
Follow the attachments service schedule and check the following items every 1 hour of operation:
1. Check picks for excessive wear and replace if necessary. (For details see page 12)
2. Be sure the picks are free to rotate in the holders.
3. Check pick holders for cracks or excessive damage and replace if necessary.
Follow the attachments service schedule and check the following items every 8 hours
of operation:
4. Check entire attachment for weld cracks or excessive damage and repair if necessary.
5. Check all hardware and retighten if loose or replace if damaged.
6. Check for damaged or missing safety decals and replace if illegible or missing.
7. Check for damaged or leaking hydraulic hoses or fittings and repair if necessary.
8. Apply 2 pumps of grease to the sealed bearing zerks every 40 hours.
9. Apply grease to all other zerks with a multipurpose grease every 8 hours.

12
ROUTINE MAINTENANCE
Pick Inspection, Setup, Removal, & Installation
Inspection:
The factory installed carbide picks are specifically
designed to be a wear product. The life expectancy
of the picks will depend greatly on the hardness, the
abrasiveness, and the thickness of the material
being cut. It is also very critical that the picks rotate
freely in the holders to maintain even and consistent
wear throughout the life of the picks. A normal pick
wear progression is depicted to the left. The pick
seen furthest to the right is an example of one that
should be replaced, with the carbide almost gone
and the body is nearly worn to the base.
IMPORTANT: Continued use of the picks beyond
this point will have adverse effects, such as poor
productivity, possible cutter head failure, and other
costly repairs.
NOTE: Examples of abnormal pick wear causes and
solutions are on page 31.
Setup:
Moving parts may cause injury or
death. Always uncouple the loader from the rock
saw prior to performing any maintenance.
1. Find a hard flat level surface to place the rock
saw while servicing it.
2. Be sure to place the rock saw so that the skid
shoe legs and rear rollers are placed firmly onto
the ground.
3. Make sure the cutter head is supported up off the
ground by the rock saw in such a way that it will
be allowed to rotate freely by hand. (See image
to the left)
4. Once the rock saw is in position, disconnect the
loader form the rock saw and begin the pick
replacement process.
Pick Wear Progression
Replace
Cutter Head off the Ground

13
Always wear eye protection that
meets ANSI Z87.1 when removing and installing
picks.
Removal:
IMPORTANT: The use of an improper tool to remove
or install the picks may cause damage to the picks or
pick holders. Always use the pick
installation/removal tool provided with the rock saw.
1. Place the jawof the installation/removal tool in the
puller groove, or between the base of the pick and
the hardened washer.
2. Use a hammer to hit the striking surface on the
installation/removal tool as seen in the image to
the right.
3. It may take multiple hits to remove the pick
completely.
4. Repositioning the cutter head can be done by
hand while removing the remaining picks.
NOTE: Inspect the pick holders for cracks or areas
that are worn thin while removing the old picks.
IMPORTANT: Continued use of the rock saw with
damaged holders may have adverse effects, such as
accelerated pick failure and possible cutter head
damage.
Installation:
1. Place puller groove of the pick into the jaw of the
pick installation/removal tool.
2. Hold the shank end of the pick over the bore of
the pick holder as shown.
3. Use a hammer to hit the striking surface on the
installation/removal tool.
4. It may take multiple hits to install the pick
completely.
NOTE: The pick and the hardened washer should
spin freely by hand. If not, the pick is not seated
completely and may require another hit with the
installation/removal tool.
5. Reposition the cutter head by hand and install the
remaining picks.
Old Pick Removal
New Pick Installation
ROUTINE MAINTENANCE

14
Lock Collar Loosen Direction
Rock Saw Gearbox Oil Replacement
1. Find a hard flat level surface to place the rock
saw while servicing it.
2. While connected to the loader raise the skid shoe
legs completely up.
IMPORTANT: Use the 6” x 12” piece of plywood
or some other durable sheet material to rest the
cutter head on so that the picks and the ground
are protected from damaging one another.
3. Place the rock saw so that the rear rollers are
placed firmly onto the ground and chocked so
that the saw will not unintentionally roll out of
position.
4. Rotate the saw forward with the loader gently
until the cutter head is resting on the sheet
material specified earlier.
5. Once the rock saw is in position, disconnect the
loader form the rock saw and begin the gearbox
oil replacement process.
6. On the right hand side of the saw, loosen the two
set screws onthe bearing lock collar with the 5/32”
Allen wrench.
7. Once loose, use the 3/16” drift punch to knock the
lock collar loose in a counterclockwise direction
as shown in image to the left.
8. After removing the lock collar use the emery cloth
to smooth out the areas on the shaft that were
marred up by the set screws.
9. With the ¾” wrench or socket remove the eight
½” hex flange nuts.
10. Slide the bearing mount plate off of the shaft and
the eight ½” bolts.
GEARBOX MAINTENANCE
The first gearbox oil change must be done between the first 15 –20 hours of use. Subsequent gearbox oil
changes should occur between 800 –1000 hours of use or annually whichever comes first.
IMPORTANT: Fluids such as engine oil, gear lube, and hydraulic fluid must be disposed of in an
environmentally safe manner. Some regulationsrequire that certain spills and leaks be cleaned in a specific
manner. Check local, state, and federal regulations for the correct disposal.
ROUTINE MAINTENANCE
Required parts and tools:
1. Wheel Chocks
2. 6” x 12” Piece of Plywood
3. 1 Ton Hoist (Minimum)
4. Hammer
5. 3/16” Drift Punch
6. 5/32” Allen Wrench
7. 8mm (5/16”) Allen Wrench
8. ¾” Wrench or Socket
9. 15/16” Wrench or Socket
10. 3/4” Drive 30mm (13/16”) Socket
11. ¾” Drive Breaker Bar
12. ¾” Drive Torque Wrench (600 ft-lbf.minimum)
13. (2) 5/8”-11UNC x 6” Hex Bolts
14. 21 oz. 80/90 Gear Lube or Equivalent
15. Approved Oil Drain Pan
16. Emery Cloth
17. Anti-Seize Lubricant
18. High Strength Thread Locker (Red)

15
Chain Lift Hook
Breaker Bar Cutout
5/8”-11 X 6” Bolt Connection
Rock Saw Gearbox Oil Replacement (continued)
11. Attach the chain hook of the 1 ton hoist to the
front lift point and lift slightly so the cutter head
rotates freely.
12. Insert the 30mm (13/16”) socket through the
circular cutout and over the 20mm lug nut.
13. Lower the hoist so that the cutter head is firmly
on the ground.
14. Attach the breaker bar to the socket and loosen
the M20 hex flange nut to the point that it can be
turned by hand. (Be sure to leave it on the stud
while the others are loosened.)
15. Lift the saw slightly so that the cutter head can
be rotated by hand and rotate until the next M20
hex flange nut aligns with the circular cutout.
16. Lower the hoist so that the cutter head is firmly
on the ground.
17. Loosen the M20 hex flange nut and repeat the
process until all eight lug nuts are loose.
18. Lift the saw slightly so the cutter head can be
rotated freely.
Cutter head is extremely heavy
and could cause injury or death if not secured
properly while removing, reinstalling or
transporting.
19. Remove all eight M20 hex flange nuts from the
wheel studs.
20. Lower the saw so the weight of the cutter head is
completely supported by the ground and move
around to the left hand side of the saw.
21. Remove the uppermost 5/8” x 1¼” GR8 motor
mount bolt on each side of the motor.
22. Install the two 5/8”-11 UNC x 6” hex bolts into the
two vacant motor mount bolt holes.
23. Remove the remaining eight 5/8” x 1¼” GR8
motor mount bolts.
24. Now the motor can be pulled out away from the
cutter head and saw while supported by the two
5/8” X 6” bolts.
_ _ _ _ ROUTINE MAINTENANCE

16
Rock Saw Gearbox Oil Replacement (continued)
25. Use an approved oil drain pan and place it below
the gearbox.
26. Remove the drain plug located on the bottom of
the gearbox with the 8mm (5/16”) Allen wrench.
27. Remove the drain plug located on the top of the
gearbox with the 8mm (5/16”) Allen wrench.
28. Allow the oil to drain completely from the
gearbox.
29. Reinstall the drain plug into the port on the
bottom side of the gearbox.
IMPORTANT: Make sure the metal washer seal
gets reinstalled between the drain plug and the
gearbox.
30. Add 21 ounces of 80/90 gear lube or equivalent
to the top port on the gearbox.
31. Reinstall the drain plug into the port on the
bottom side of the gearbox.
32. Next slide the motor up to the saw, being sure to
align the studs with the cutter head mount holes.
33. Once aligned install at least one of the 5/8” x 1¼”
GR8 motor mount bolts to hold the motor in
position.
34. Apply the high strengththread locker (Red)to the
remaining nine 5/8” x 1¼” GR8 bolts.
35. Install the 5/8” x 1¼” GR8 bolts into the seven
vacant motor mount bolt holes.
36. Remove the one 5/8” x 1¼” GR8 bolt without
thread locker and the two 5/8” X 6” bolts.
37. Apply thread locker to the 5/8” x 1¼” GR8 bolt that
was just removed.
38. Install the three 5/8” x 1¼” GR8 bolts into the final
three vacant motor mount bolt holes.
39. Torque all ten 5/8” x 1¼” GR8 bolts to 159 ft-lbf.
ROUTINE MAINTENANCE
Fill
Drain

17
Lock Collar Tighten Direction
Torque to 570 ft-lbf
_ _ _ _ ROUTINE MAINTENANCE
Rock Saw Gearbox Oil Replacement (continued)
40. Move around to the right hand side of the saw.
41. Push the cutter head back onto the motor flange
and lift the saw slightly so the cutter head is
supported by the wheel studs.
42. Reinstall the eight M20 hex flange nuts making
sure the cutter head is seated completely over
the pilot on the motor spindle mount flange.
43. Rotate the cutter head so that one of the M20
hex flange nut aligns with the circular cutout.
44. Lower the hoist so that the cutter head is firmly
on the ground.
45. Use the 30mm (13/16”) socket and a ¾” drive
torque wrench to torque the M20 hex flange nut
down to 570 ft-lbf.
46. Lift the saw slightly so that the cutter head can
be rotated by hand and rotate until the next M20
hex flange nut aligns with the circular cutout.
47. Lower the hoist so that the cutter head is firmly
on the ground.
48. Torque the M20 hex flange nut down to 570 ft-lbf
and repeat the process until all eight lug nuts are
loose.
49. Next apply anti-seize lubricant to the stub shaft.
50. Slide the bearing mount plate back onto the stub
shaft and the over the eight ½” bolts.
51. It may be necessary to lift the saw and rotate the
cutter head by hand to align the ½” bolts with the
bearing mount plate.
52. Install all eight ½” hex flange nuts and torque to
75 ft-lbf.
53. Install the locking collar over the stub shaft and
onto the bearing.
54. Rotate the locking collar clockwise until it snugs
up.
55. Use the 3/16” drift punch to knock the lock collar
in a clockwise direction until it is tight.
56. Finally tighten the two set screws on the lock
collar with the 5/32” Allen wrench.

18
PARTS INFORMATION
ITEM
QTY
PART NO.
DESCRIPTION
STOCK NO.
3
1
318925
ARM DEPTH R-SAW HD LH 18 W/A
318927
ARM DEPTH R-SAW HD LH 24 W/A
4
1
318911
ARM GUIDE ROD R-SAW HD W/A
8
2
319311
SKID SHOE ROCK SAW W/A
15
1
319328
BUSH 3 X 1.27 X 1.5 Z
16
1
318988
PUSH ROD DEPTH GAUGE 18 W/A Z
1
318980
PUSH ROD DEPTH GAUGE 24 Z W/A
17
1
320795
TOOL BIT PULLER
19
1
319373
BUSHING OILITE 1 X 1.25 X 1.5
21
1
318979
BUSH 1.25 X .63 X 1 PLASTIC
23
1
318991
BRKT BRACE ARMS R-SAW 18 PNT
1
318961
BRKT BRACE ARMS R-SAW PNTD
24
2
318912
PIN 1.25 X 3.813 SNP RNG W/A
25
2
317896
BUSH SPRING 1.50 X 1.25 X 2.50
29
2
318873
CYLINDER 2.5 X 16 B-B
REPLACED 317854
2
317854
CYLINDER 2.5 X 16 B-B
REPLACED BY 318873
32
2
33446
WASHER MB 1 10GA NARROW
36
4
37219
NUT REV LOCK
1 NC
38
2
13470
BOLT HEX
1 X 4-1/4 NC GR 5
40
2
313333
RING SNAP EXT 2 X .063
41
4
33495
WASHER MB 2 14GA NARROW
43
2
65127
PIN COTTER 3/16 X 2
44
3
19929
BOLT FLNG
3/8 X 3/4 NC FLG GR 5
45
6
37217
NUT REV LOCK
3/4 NC
46
4
28280
RING SNAP EXT 1.25 X .050
53
4
13363
BOLT HEX
3/4 X 2-1/2 NC GR 5
62
1
64134
PIN ROLL 3/16 X 1-1/8
63
1
33086
WASHER FLAT
1/2 X 1.06 OD
71
1
65076
PIN COTTER 1/8 X 1

19
PARTS INFORMATION

20
PARTS INFORMATION ___________________
ITEM
QTY
PART NO.
DESCRIPTION
STOCK NO.
1
1
318920
MOUNT FRAME R-SAW HD W/A
2
1
318922
FRAME SHIELD R-SAW HD 18 W/A
1
318923
FRAME SHIELD R-SAW HD 24 W/A
6
1
318924
ARM DEPTH R-SAW HD RH 18 W/A
1
318926
ARM DEPTH R-SAW HD RH 24 W/A
7
2
318957
BACKING PLATE 26 R-SAW PNTD
8
2
319311
SKID SHOE ROCK SAW W/A
13
1
318914
BLADE R-SAW SPOIL 18 W/A
1
318919
BLADE R-SAW SPOIL 24 W/A
18
2
319327
ROLLER CAST 5 X 1 X 2.75
20
1
318985
PLATE HOOK LATCH GUIDE Z
22
3
315118
BUSHING 1.75 x 1.25 x .50
24
2
318912
PIN 1.25 X 3.813 SNP RNG W/A
25
2
317896
BUSH SPRING 1.50 X 1.25 X 2.50
26
2
314808
CHANNEL PLASTIC 24
28
1
317274
CYLINDER 2 X 24
36
4
37219
NUT REV LOCK
1 NC
38
2
13469
BOLT HEX
1 X 4 NC GR 5
40
2
313333
RING SNAP EXT 2 X .063
41
4
33495
WASHER MB 2 14GA NARROW
42
2
13473
BOLT HEX
1 X 5 NC GR 5
45
6
37217
NUT REV LOCK
3/4 NC
54
3
316654
WASHER 3.5 X .63 X .25 Z
55
6
316657
WASHER NYLON 3.5 X 1.3 X .25
56
3
33630
WASHER LOCK
5/8"
57
3
13309
BOLT HEX
5/8 X 1-1/2 NC GR 5
58
3
316655
WASHER 3.5 X 1.28 X .25 Z
59
1
13366
BOLT HEX
3/4 X 3-1/4 NC GR 5
60
8
167011
NUT FLG TOP-LOCK
1/2 NC GR8
61
10
15214
BOLT HEX
1/2 X 2-3/4 NC GR 8
65
1
300285
PIN SNAPPER 1/4 X 1.38
66
1
37210
NUT REV LOCK
1/4 NC
69
1
13003
BOLT HEX
1/4 X 3/4 NC GR 5