Curtis New Holland Workmaster 25S Operating instructions

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INSTALLATION & OWNER’S MANUAL
New Holland Workmaster 25S
Cab with Heater (p/n: 1NHWM25SCA)
fits tractor models: Workmaster 25S
(*=Not including accessories)
Available Options:
1. Front LED Work Lights (P/N: 9LEDW4)
2. Rear LED Work Lights (P/N: 9LEDW3)
3. Strobe Light (P/N: 9LEDS2)
4. Dome Light (P/N: 9LEDD14)
5. Side View Mirrors (P/N: 9PM5)
6. Rear View Mirror (P/N: 9PM3)
7. Rear Wiper (P/N: 9PWK8512F9-11A)
8. Seal Kit (P/N: 9SK8)
9. Adaptor Kit to Mount Cab Without Loader (P/N: 1NHWM25SAK)
Approximate Installation Time *
Experienced Dealer Technician – 6 Hours
Average Dealer Technician – 8 Hours
Do-It-Yourself – 10 Hours
Approximate Product Specifications
Floorboard to Roof Height: 61.625 inches
Weight: 329 lbs.
Cab Width: 47.625 inches (w/o side mirrors)
Rev. B, 08/17/2021
P/N: IM-1NHWM25SCA
The contents of this envelope are the property of the owner. Leave with the owner when installation is complete.
While this cab kit was designed to fit on the vehicle(s) listed above, manufacturing tolerances and vehicle
assembly may affect cab fitment. It is the responsibility of the cab installer to check all vehicle pedals and
levers for full functionality and, as required, adjust the cab fitment to prevent any interference of the cab
components with the travel of pedals or levers.
Front windshield wiper and
heater comes standard
with cab. Also shown with
optional front work lights,
and side view mirrors.

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TABLE OF CONTENTS
WARNINGS, TIPS, & REQUIRED TOOLS...................................................... 3
CAB INSTALLATION.................................................................................. 4-18
CAB FEATURES & OPERATION............................................................. 19-20
CARE AND MAINTENANCE......................................................................... 21
SERVICE PARTS .................................................................................... 22-25
OPTIONAL ACCESSORIES ......................................................................... 26
TORQUE SPECIFICATIONS ................................................................... 27-28

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Curtis cabs feature an assembly of parts designed for your vehicle which require adjustment
and alignment of components to accommodate vehicle variations and provide proper weather
protection. For accurate installation, proper operation, and years of satisfaction, please read
and understand the installation and owner’s manual fully prior to installing the cab.
From all of us at Curtis, we thank you for choosing our product.
HELPFUL HINTS:
•Refer to parts diagram found in the service parts section of this manual to help identify parts during the assembly process.
•To assist with the cab installation, leave all fasteners loose for later adjustment unless otherwise specified.
•Read and understand all instructions before beginning.
•Apply a silicone sealant to seal any minor gaps that may occur due to vehicle variations.
•Use caution to avoid damaging the factory installed threaded inserts or weld nuts. Begin the thread engagement by hand to
avoid or correct potential cross threading.
•Make sure the areas where the supplied self-adhesive hook Velcro and seals will be applied are clean, dry, and at room
temperature for best adhesion.
•Before installing parts with factory installed rubber, make sure the rubber is fully installed onto the parts for proper fit and
sealing.
driver and passenger.
Curtis accessory weights are listed in product
add additional weight to the base vehicle. All
Curtis Cabs, blades and general accessories
ADDED
WEIGHT
brochures. Deduct the accessory's total weight
from the vehicle's rated capacity and never
exceed the vehicle's rated capacity including
Exposure to Carbon Monoxide
can Cause illness, serious injury or
death. Never operate vehicle if suspicious of Carbon Monox-
ide. Inspect exhaust system for leaks monthly. Leaks can
result from loose connections, corrosion, cracks or other
damage to the exhaust manifold. If leaks are found, repair or
replace exhaust system. Do not use vehicle until repair or
replacement is complete.
•Set of Standard and Metric Sockets (3/8” Drive)
•3/8” Drive Ratchet with Extension
•Torque Wrench
•Set of Standard and Metric Open-End Wrenches
•Set of Standard and Metric Allen Wrenches
•#2 and #3 Phillips Head Screwdrivers
•Flat Head Screw Driver
•Body Clip Removal Tool
•Pliers
•Non-Marring Pick
•(2) Quick Grip Clamps
• Bar clamp (optional)
•5/16” Nut Driver
•Coolant Drain Pan
•Drill/Driver
•#2 and #3 Phillips Head Bit
•Utility Knife
•Pair of Scissors
•Shears
•Grease
•Silicone Sealant
•Teflon Tape
•Tape Measure
•China Marker or other Non-Permanent Marker
•Snips
WARNINGS, TIPS, & REQUIRED TOOLS
TOOLS REQUIRED:
GENERAL INFORMATION BEFORE YOU START
California Health and Safety Proposition 65 Warning: This product may contain chemi-
cals known to the state of California to cause cancer and birth defects or other reproductive harm.

CAB INSTALLATION
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STEP 1: (VEHICLE PREP)
1.1 If tractor is equipped with a 100LC Loader, rotate loader
valve hose loop up per figures 1.1a and 1.1b.
Tools required
22mm Wrench or Socket
1.2 Remove and position the loader (if installed) away from
the vehicle.
1.3 Remove and set aside the ROPS mounted tool box and
bracket along with its fasteners, if equipped. See fig. 1.3
Tools required
12mm Wrench or Socket
1.4 Remove and set aside the SMV sign and its bracket.
See Figures 1.4.
Tools required
13mm Wrench and Socket
1.5 Remove outside ROPS hardware found on both sides of
the tractor and set aside. See figure 1.5.
Tools required
19mm Wrench or Socket
1.6 Remove tail lights from factory mounts per figure 1.6.
Note: you do not need to disconnect the lights.
Tools required
17mm Wrench or Socket
Fig. 1.3 (Remove ROPS mounted Tool Box)
Fig. 1.1a & 1.1b (Rotate Hose Loop)
Rotate Loop
Up
To Here
Fig. 1.5 (Outboard ROPS Fasteners)
Remove outside
ROPS Hardware
Fig. 1.6 (Tail Lights)
Slide light backwards
from mounts
Fig. 1.4 (Remove SMV Sign Bracket)
Remove + Set Aside

CAB INSTALLATION
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STEP 1: (VEHICLE PREP
CONTINUED)
1.7 Pop the hood, disconnect the headlights per figure 1.7.
1.8 If Grill Guard is installed, remove and set aside with
mounting hardware per figure 1.8.
Tools required
19mm Wrench or Socket
1.9 Remove grill and side panels (all one piece) from
tractor.
Tools required
12mm Wrench or Socket
1.10 Following the manufacturer’s instructions, remove the
access panel under the dash and disconnect the
battery.
1.11 Locate the fuse harness (WH-GF) in the hardware box.
Make certain the fuse is installed in the fuse holder.
Install the ring terminal of the fuse harness to the
alternator. See Figure 1.11.
1.12 Reconnect battery and reinstall the access panel.
1.13 Install loader lock lever extension bracket onto factory
lever. See Figure 1.13.
Hardware Used Qty
#10-32 X 1/2” Flange Hex Head Screw 1
Tools required
5/16” Wrenches
Note: If installing optional seal kit (9SK8), or Adaptor Kit to
Mount Cab without Loader (1NHWM25SAK), install
now.
Fig. 1.13 (Install Lock Lever Ext Bracket)
Factory Lever
Fig. 1.7 (Disconnect Head Light, Left Side Shown)
Disconnect
Light Here
Fig. 1.8 (Remove Grill Guard)
Fig. 1.11 (Fuse Harness Instalation)
Fuse Holder
Alt Power

CAB INSTALLATION
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STEP 2: (REAR MOUNT BRACKETS)
2.1 Using the fasteners listed below and those that were
removed during step 1.4, first install the spacers and
then the rear mount bracket on the left side of vehicle
with the small flange facing up. See Figure 2.1.
Hardware Used Qty
1/2” ID X 3/4” OD X 5/32” THK Spacer 2
Tools required
17mm Wrench or Socket
2.2 Install lower left mount per Figure 2.2.
Hardware Used Qty
5/16-18 X 3/4 Hex Head Screw 2
5/16-18 Hex Nut 2
Tools required
1/2” Wrench and Socket
2.3 Install left tail light on rear mount bracket, removed
during step 1.5. See Figure 2.3.
Tools required
17mm Wrench
2.4 Repeat steps 2.1 thru 2.3 on the right side of the
vehicle.
Fig. 2.1 (Rear Mount Bracket Orientation)
Fig. 2.2 (Lower Rear Mount Orientation)
Fig. 2.3 (Re-Install Tail Light)
Note: Red on back
lower half of tail light.
STEP 3: (ROPS BRACKETS AND
CLAMPS)
3.1 Measure down from the tab found on the ROPS
Structure approximately 7/8”. Make a mark using a
china marker or other non-permanent marker. Install the
left ROPS bracket and clamp. See Figure 3.1.
Hardware Used Qty
5/16-18 X 3/4 Hex Head Screw 4
5/16-18 Hex Nut 4
Tools required
1/2” Wrench and Socket
3.2 Repeat step 3.1 on the right side of the vehicle. Fig. 3.1 (ROPS Bracket and clamp, left)
ROPS Tab
7/8”

CAB INSTALLATION
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Fig. 4.3a (Cowl)
STEP 4: (RADIATOR SHROUD, LOAD
LOCK LEVER & COWL)
4.1 Position the radiator shroud on the vehicle just in front
of the front lip of the floorboard per figure 4.1. Install Tip:
If needed, move the rubber boot of the jockstick out of
the way when placing the shroud in place. Place the
boot back in place once shroud is placed.
4.2 Install Thumb Screw into previously installed Load Lock
Lever Extension bracket (Step 1.10). Make sure there
is enough thread on the inside for a hex nut to fit. Then
thread and tighten on the hex nut on the inside. See
Figures 4.2a and 4.2b.
Hardware Used Qty
Thumb Screw, 3 inches long 1
#10-32 Hex Nut 1
Tools required
3/8” Wrench or Socket
4.3 Install steel cowl in front of radiator shroud per figure
4.3a. For best seal, make sure that rubber running
across the top of the dashboard (between the white
arrows) is pushed back and pushed forward as it runs
down the side of the dash (outside the white arrows) as
shown in figure 4.3b.
Hardware Used Qty
1/4-20 Thumb Nut 5
Fig. 4.1 (Radiator Shroud, Right)
Lip of floorboard
Boot
Fig. 4.3b (Cowl Rubber)
Push rubber back towards
steering wheel between
the white arrows.
Figure 4.2a (Load Lock Lever, Cab inside)
Figure 4.2b (Load Lock Lever, Cab outside)
#10-32 Hex Nut

CAB INSTALLATION
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STEP 5: (REAR LEGS)
5.1 Fasten the rear leg to the previously installed ROPS
brackets. See Figure 5.1.
Hardware Used Qty
5/16-18 X 3/4 Hex Head Screw 2
5/16-18 Hex Lock Nut 2
Tools required
1/2” Wrench and Socket
5.2 Repeat step 5.1 on the right side of vehicle.
Fig. 7.2a (Side Frame)
5/16-18 x
3/4 Screws
5/16-18
Nuts
1/4-20
Thumb
Nuts
Fig. 5.1 (Rear Leg to Side Frame Fasteners)
5/16-18 x 3/4 Screws
5/16-18 Nuts
STEP 6: (LOWER FRONT MOUNTS)
6.1 Install left side lower front mount using supplied
hardware listed below. See Figure 6.1. Note: If
backhoe or No-Loader Adapter Kit is installed, 1/2”
spacers are not required.
Hardware Used Qty
M12x1.75 X 55 Hex Head Screw 2
M12 Washer 2
M12x1.75 Flange Hex Nut 2
1/2” ID X 3/4” OD X 1/2” THK Spacer 2
Tools required
19mm Wrench and Socket
6.2 Repeat step 6.1 on the right side of vehicle.
Fig. 6.1 (Lower Front Mount, Left)
M12 Washer
STEP 7: (SIDE FRAMES)
7.1 With assistance, remove the pre-assembled left door
from the left side frame and set aside. Do not lose the
brass washers on the hinge pins.
7.2 Fasten the left side frame to the left Front Mount,
Radiator Shroud, and Rear Leg. See Figures 7.2a and
7.2b.
Hardware Used Qty
5/16-18 X 3/4 Hex Head Screw 5
5/16-18 X 1 Button Head Screw 2
5/16-18 Flat Washer 2
5/16-18 Hex Nut 2
1/4-20 Thumb Nut 1
Tools Required
1/2” Wrench or Socket
3/16” Allen Wrench
Fig. 7.2b (Side Frame, Detail View)
5/16-18 Button
Head Screws
5/16 Washers
Lower Front Mount
Spacer Behind Lower
Front Mount

CAB INSTALLATION
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STEP 7: (SIDE FRAMES CONT’D)
7.3 Fasten the side frame to the cowl as shown in Fig-
ure 7.3.
Hardware Used Qty
5/16-18 X 3/4 Hex Head Screw 2
5/16-18 Hex Nut 2
Tools required
1/2” Wrench and Socket
7.4 Repeat steps 7.1 thru 7.3 on the right side of the
vehicle.
STEP 8: (WINDSHIELD SUPPORT)
8.1 With assistance, align sides and top of the windshield
support with the side frames. Fasten the windshield
support in place with a screw through the front of each
side frame. See Figure 8.1. Confirm bolt holes in the top
of the windshield support align with the inserts in the
side frames and tighten hardware.
Hardware Used Qty
5/16-18 X 3/4 Hex Head Screw 2
Tools required
1/2” Wrench or Socket
Fig. 8.1 (Windshield Support to Side Frame Fasteners)
5/16-18 x 3/4 Screws
Fig. 9.1 (Lower Rear Panel)
1/4-20 Nut
STEP 9: (LOWER REAR PANEL)
9.1 Fasten the lower rear panel to the rear legs as shown in
Figure 9.1.
Hardware Used Qty
1/4-20 X 5/8 Hex Head Screw 4
1/4-20 Flange Hex Nut 4
Tools required
3/8” Wrench and Socket
7/16” Wrench and Socket
Note: On backhoe equipped vehicles, the lower rear panel
will need to be removed to operate the backhoe. It is up
to the discretion of the operator whether or not to
reinstall.
5/16-18 x 3/4 Screws
5/16-18 Nuts
Fig. 7.3 (Side Frame to Cowl Fasteners)
1/4-20 x 5/8 Screws

CAB INSTALLATION
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Fig. 10.1 (Attach Main Harness To Cowl)
Fig. 10.3 (Secure Harness to Side Frame)
STEP 10: (CAB WIRING)
10.1 Attach the main power wire harness to the top of the
cowl, about 6” from the end of the windshield wiper
motor connector, using supplied zip-ties. The connector
end should be outside the cab with the rest of the
harness on the inside. See Figure 10.1.
Hardware Used Qty
11” Long Zip-Tie 3
10.2 Snap the heater switch into the rectangular cutout in the
top of the cowl and connect the wire harness.
10.3 Run the wire harness over to and down the left side
frame through the gap between the floorboard and
intake shroud. Secure it in (2) places along the side
frame using P-clamps and self-drilling screws. See
Figure 10.3.
Hardware Used Qty
#10 x 3/4” Pan Head Self-Drill Screw 2
P-Clamps 2
Tools required
#2 Phillips Bit
Drill/driver
10.4 Run the harness to the alternator as shown in Figures
10.4 and 10.5 making sure that wires will not be cut or
pinched passing by the radiator or moving parts.
10.5 Locate the fuse harness (WH-GF) and connect the fuse
harness to the main power harness via the bullet
connectors. See Figure 10.5.
10.6 Install the ring terminal of the main power wire harness
to the vehicle’s engine. Coil the slack in the power
harness and secure with a wire tie. See Figure 10.5.
Double check that the wires are not pinched or near
sharp or hot surfaces.
NOTE: At the installer’s discretion, wiring for
accessories may also be installed into the engine
compartment at this time.
10.7 Secure wires (with wire ties provided) away from any
hot or moving engine components where it could melt or
be pinched.
Fig. 10.5 (Power Harness Connections)
Fuse Holder
Power
Harness
Ground
Wire Ties
P-Clamps
Fig. 10.4 (Power Harness to Hood)
Alt Power
Heater Switch Wiper Connector
End
FB & SHROUD GAP HERE
FB & SHROUD
GAP HERE
Towards
Alternator

CAB INSTALLATION
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STEP 11: (WINDSHIELD)
11.1 With assistance, set the windshield up to the side
frames and secure it to the windshield support using the
hinge spacers and hardware. See Figure 11.1. Leave
hardware loose.
Hardware Used Qty
5/16-18 x 1.5” Flat Head Screw 4
5/16-18 Hex Lock Nut 4
Tools required
#3 Phillips screw driver
½” Wrench or Socket.
11.2 Secure the windshield latches to the side frames with
the latches open, and tighten latch hardware. See
Figure 11.2.
Hardware Used Qty
¼-20 x 5/8” Hex Head Screw 4
¼-20 Hex Lock Nut 4
Tools required
3/8” Wrench or Socket
7/16” Wrench or Socket
11.3 Close the windshield while lifting up on the bottom
edge. Tighten hinge hardware.
Caution: The windshield hinges are plastic
components. Do not overtighten the flat head
screws. Torque to 7 ft.-lbs. max.
11.4 Ensure the windshield latches function properly and the
windshield pivots open.
11.5 Remove the over tightening caution decal from the top
of the windshield.
STEP 12: (WINDSHIELD WIPER
MOTOR)
12.1 Mount the wiper motor to the windshield. See Figure
12.1. Make sure the wires are above the wiper motor
shaft to prevent pinching the wires when the windshield
is opened and closed, then connect to the wire harness.
NOTE: The wiper arm and blade will be installed in a later
step. The wiper motor should easily clear the cowl, but if
not, loosen the windshield hinges and raise the
windshield to gain some clearance.
Fig. 11.1 (Windshield)
Fig. 11.2 (Secure Windshield Latches)
Fig. 12.1 (Windshield Wiper Motor)
5/16-18 Flat
Head Screws
5/16-18 Nuts
Hinge Spacers
1/4-20 x 5/8 Screws
1/4-20 Nuts
Hex Nut
Plastic Washer
Rubber Washer
Wire Above
Motor Shaft
Large Collared Bushing
(inside)
1/4-20 x 5/8” Screw 1/4” Int. Tooth Lock Washer
Small Collared
Bushing (Inside)
Rubber Washer
Cap
Nut
Steel
Washer

CAB INSTALLATION
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STEP 14: (TIGHTEN HARDWARE)
14.1 Tighten all hardware at this time, using the torque values
found on the last (2) pages of this manual.
Note: Each side frame can be pushed inward at the back to
close any gaps along the fender contour before
tightening hardware.
Note: Suggested tightening sequence is as follows:
Floorboards, cowl, rear mounts, rear legs, lower rear
panel, roof, and ROPS brackets.
14.2 Once all hardware is fully tightened, remove the (2)
quick grip clamps from the roof/rear legs.
Fig. 13.1 (Roof Preparation)
Fig. 13.2a (Roof Fasteners)
Fig. 13.3 (Squaring of Rear Legs and Roof)
STEP 13: (ROOF)
13.1 Per figure 13.1, pierce the headliner in (6) places where
the rubber plugs were previously removed. Use a
screwdriver to poke holes through the headliner from
the headliner side up through the hole in the roof to
avoid having the headliner pull away from its glued
surface.
13.2 With assistance, set the roof on top of the cab. Loosely
secure with (6) screws and plastic seal washers on the
top of the roof into the windshield support and side
frames. With an additional (2) screws and nuts on back
edge of the roof into the rear legs. See Figures 13.2a
and 13.2b.
Hardware Used Qty
5/16-18 x 3/4” Hex Head Screw 8
5/16” Plastic Seal Washer 6
5/16-18 Flange Hex Nut 4
Tools required
1/2” Wrenches and/or Sockets
13.3 Once all roof fasteners are started, measure the width
of the rear legs (outside to outside). Adjust the width if
needed to 27-7/8”. Measure opening corner to corner
for squareness and clamp the rear flange of the roof to
each of the rear legs. If necessary a bar clamp may be
used to pull the rear legs in to 27-7/8”. See Figures
13.2b and 13.3.
Note: Leave the clamps in place until all cab fasteners are
tightened during the following steps.
Tools required
(2) Quick Grip Clamps
Tape Measure
27-7/8”
5/16-18 Nuts
5/16” Seal Washers
Fig. 13.2b (Roof Fasteners)
Pierce headliner here
5/16-18
Nuts
5/16-18 x 3/4 Screws
5/16-18 x
3/4 Screws
Clamp Here

CAB INSTALLATION
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STEP 16: (HEATER)
16.1 Attach the heater bracket to the left side frame. See
Figure 16.1. Fully tighten hardware at this time.
Hardware Used Qty
5/16-18 x 3/4” Hex Head Screw 2
Tools required
½” Socket with Extension
16.2 Attach the heater to the heater bracket by removing and
re-using the screws on the side of the heater. Tighten
hardware.
Tools needed
#2 Phillips Screw driver. Fig. 16.1 (Install Heater Bracket to Side Frame)
5/16-18 x 3/4” Screws
STEP 17: (HEATER PLUMBING)
* CAUTION * To avoid injury caused by hot engine
coolant, make sure the engine has completely cooled
down before beginning plumbing of auxiliary heater.
17.1 Place a clean coolant drain pan under the radiator.
Next, drain coolant from radiator petcock. See fig. 17.1.
17.2 Snap provided ¾” bushings into the plastic radiator
shroud from the inside. Cut (2) 17” pieces of the
provided 5/8” diameter heater hose. Slide (2) 1” hose
clamps on the end of the (2) cut hoses. Slide the hoses
onto the end of the (2) heater nipples and tighten down
the hose clamps. Next, slide the (2) hoses through the
snap bushings. Make sure not to kink the hose. See
Figure 17.2.
STEP 15: (REAR WINDOW)
15.1 Grease the hinge pins found on the left side rear leg
and slide on greased brass washers (one washer per
pin). See Figure 15.1.
15.2 Hang the rear window on the hinges.
Note: Loosen rear window hinges if adjustment is needed.
15.3 Connect the window latches to the right rear leg by
depressing the tabs on the latch and inserting into the
receivers mounted on the rear leg. Close and check the
alignment of the window. If off, check measurements
and re-align the rear legs. Tighten the hinge hardware
to 7 ft.-lbs. Verify smooth operation of the latches. Fig. 15.1 (Hang Rear Window)
Brass Washers
on Greased Pins
Snap Latches
into Right
Rear Leg,
2 Places
Fig. 17.2 (Heater Hose Routing)
Snap Bushings
1” Hose
Clamp
Petcock
Drain Hose
Fig. 17.1 (Petcock Valve Under Radiator, Right Side)

CAB INSTALLATION
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STEP 17: (HEATER PLUMBING
CONTINUED)
17.3 Slide 1” hose clamp and Female Insert In-Line Coupling
onto the right hose outside the cab and tighten down
hose clamp onto hose/barb of in-line coupling. See
figure 17.3
17.4 Slide 1” hose clamp and Male Insert In-Line Coupling
onto the left hose outside the cab and tighten down
hose clamp onto hose/barb of in-line coupling. See
figure 17.3
17.5 Connect the mating in-line couplings to the previously
installed couplings. Cut 51 inches of heater hose, install
hose and 1” hose clamp onto the right side hose
coupling and run hose towards the front of the vehicle
using figures 17.3 and 17.6 as reference. With
remaining heater hose, install hose and 1” hose clamp
onto the left side hose coupling. Again using figures
17.3 and 17.6 for suggested routing.
17.6 Run heater hose per figure 17.6.
17.7 Disconnect temp sensor wire from the back of the
temperature sensor. Remove 3/8” plug as well as
temperature sensor and brass washer from water
pump. See figure 17.7.
17.8 Install block adapter into 3/8” plug location per figure
17.7.
17.9 Using the (3) supplied nylon washers as needed to seal
the sending unit and have the threaded section point up
as shown on figure 17.9.
17.10 Re-install brass washer and temperature sensor into
the backside of the sending unit adapter per figure 17.9.
Fig. 17.3 (Heater Hose Disconnects, Outside of Cab)
Right
Hose
Female Insert
Coupling
Female Insert
Coupling
Left
Hose
Figure 17.6 (Heater Hose Routing)
Left
Hose
Right
Hose
Figure 17.7 (Block Adapter Install)
Block
Adapter
Temp. Sensor
Location
Figure 17.9 (Sending Unit Install)
Block
Adapter
Here
Temp. Sensor
Elec. Connection

CAB INSTALLATION
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STEP 18: (FINISH HEATER)
18.1 Connect the leads found on the heater to the main
power wire harness (orange to orange, red to red &
black to black). See Figure 18.1.
18.2 Install the provided 13” length of 1/2” wire loom to the
heater leads.
18.3 Refill the cooling system. Start the tractor and inspect
coolant system for leaks.
18.4 With the tractor running, check the heater hoses and
make sure they get warm. If not, remove the heater
from its mount and let hang from the hoses as low as
possible. If the heater and hoses still do not get warm,
temporarily put a clamp on the upper radiator hose to
force coolant through the heater. Warning: To avoid
engine damage, remove the clamp as soon as heater
gets warm. Reattach heater to the bracket. Once
complete, let the engine cool, check the coolant level,
and top off coolant if required.
STEP 19: (FINISH WIPER)
19.1 Turn on the wiper motor briefly, then turn back off. This
will ensure the motor shaft is in the correct parked
position.
19.2 Pre-assemble the wiper arm and wiper blade.
19.3 Install the wiper arm onto the wiper motor so that the
wiper is horizontal. See Figure 19.3. Tighten the Set
Screws.
Tools required
2.5mm Allen Wrench
19.4 Adjust the length of the wiper arm as long as possible
while still clearing the outer cap nut for the windshield
latches. Turn on the wiper to check proper operation.
Reference step 5 of the wiper installation instructions.
Fig. 18.1 (Heater Power Connections)
Fig. 19.3 (Wiper Arm and Blade)
Set Screws
Red
Wire
Black
Wire
Orange
Wire
Figure 17.11 (Heater Hose Install)
STEP 17: (HEATER PLUMBING
CONTINUED)
17.11 Install block adapter onto the top of the sending unit
adaptor. Next, install right side 5/8” heater hose and 1”
hose clamp onto the recently installed block adapter.
Re-connect temp. sensor wire to temp. sensor. See
figure 17.11.
17.12 Install left 5/8” heater hose (cut as needed) and 1” hose
clamp onto the other block adapter. See figure 17.11.
17.13 Secure all heater hoses from moving parts and
excessive heat sources with the supplied wire ties.
Note: Turn the wheels all the way to the right and left to
ensure adequate clearance between the tires and
hoses. Also, make sure that heater hose routing will not
interfere with loader reinstallation.
17.14 Re-install grill and side panels, removed on step 1.9.
Reconnect head light disconnected on step 1.7.
Tools required
12mm Wrench or Socket
Block
Adapter
Right
Hose

CAB INSTALLATION
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STEP 21: (Tool Box Relocation)
21.1 Remove factory tool box from factory mounting bracket.
Tools required
13mm Wrench or Socket
21.2 Secure the supplied tool box relocation bracket to the
ROPS with the hardware that was removed during step
1.2. See Figure 21.2. Note: can be installed on the left
or right side of ROPS depending on desired access on
backhoe (if installed).
Tools required
12mm Wrench or Socket
21.3 Fasten the factory tool box to the previously installed
relocation bracket as shown in Figure 21.3.
Hardware Used Qty
5/16-18 x 3/4” Hex Head Screw 2
5/16-18 Hex Nut 2
Tools required
1/2” Wrench and Socket
Fig. 21.2 (Tool Box Offset Bracket, Left side of ROPS)
Fig. 21.3 (Install Tool Box onto Offset Bracket)
Fig. 20.1 (Relocated SMV Sign and Bracket)
Spacers Here
STEP 20: (SMV SIGN)
20.1 Re-install SMV Sign and Bracket removed on step 1.3
using the supplied 40mm long spacers (ref.: 1.57” long)
per figure 20.1.
Hardware Used Qty
M8X1.25 X 60mm Hex Screw 2
M8 X 40mm long spacer 2
Tools required
13mm Wrench and Socket

CAB INSTALLATION
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STEP 22: (DOORS)
22.1 Check to make sure that the brass washers are still
installed on the left side hinge pins and then apply
grease to the pins.
22.2 Hang the left door on the hinge pins.
Note: If necessary, adjust the door as outlined in steps 22.3
thru 22.5.
22.3 Loosen the door hinges to allow for adjustment later.
While lifting up and forward on the door handle, line up
the door latch with the striker pin and carefully attempt
to latch. You should be able to hear 2 clicks as you
slowly engage the latch on the pin. If the latch is too far
forward or back to latch on the pin, adjust as shown.
See Figures 22.3a through 22.3c. Then retighten and
latch.
22.4 Stand back and examine the alignment of the door with
the roof and the A-pillar. You can adjust this by moving
the striker pin up or down as shown to help with
alignment. TIP: In the final step, the front of the door will
drop a small amount the first time you open it. Set the
front of the door a little bit higher so it aligns properly.
Adjust as necessary until you are happy with the
alignment. Have an assistant sit inside the cab and
once more carefully close the door like you did in step
22.3. Work with the assistant and tighten the hinge
bolts.
22.5 Open the door and check for smooth operation of the
latch. As noted in step 22.4, the door will likely drop a
little bit at the front and the striker pin will need to be
adjusted down accordingly. Also make sure the door
seal is making contact along the perimeter of the door
and the latch clicks twice when closing. If necessary,
adjust the striker in or out to achieve this.
22.6 With the door open, attach a gas strut to the ball studs
on the side frame and door. Make sure the quick
release end is on the side frame so that the gas strut
stays with the door if removed for ventilation.
22.7 Repeat steps 22.1 through 22.6 for the right door.
Fig. 22.3a (Door Hinge Adjustment)
Fig. 22.3b (Striker Pin Adjustment)
Fig. 22.3c (Door Latch Adjustment)
Adjustment
Adjustment
Adjustment
Loosen Door
Hinges

CAB INSTALLATION
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STEP 23: (ACCESSORIES/PLUGS)
23.1 If installing accessories, please do so now. If not, use
the supplied plugs to fill any exposed holes. See
Figures 23.1a and 23.1b.
23.2 Per figure 23.2, install (7) insert covers.
23.3 Optional Rear Wiper Note:
For easier wiper motor harness disconnection, cut the
main wiring harness connector off a few inches from the
end and create a jumper harness with it using bullet
connectors. Do not cut the connector off the wiper
motor.
Strip all the wires, crimp a male bullet connector onto
the ground (black) wire of the main wire harness and a
female bullet connector on the positive (red) wire.
Reverse the male and female bullet connectors on the
new jumper wire harness so that the male bullet
connector is on the positive (red) wire and the female
bullet connector is on the ground (black) wire.
STEP 24: (FINISHING TOUCHES)
24.1 Install caution sticker on right side of ROPS per fig-
ure 24.1.
24.2 Reinstall the grill guard and loader if equipped.
Tools required
19mm Wrench or Socket
24.3 Due to the nature of the packaging materials used for
shipping this product, the components of the cab
system may have dust on their surfaces upon removal
from the packaging. It is recommended that after
completion of the cab installation, the cab and vehicle
are washed thoroughly to eliminate any dust or
contaminants. See the Care and Maintenance section at
the back of this manual for critical information on
cleaning the cab.
Fig. 23.1a (Install Plugs, Door)
Rubber Plugs
Fig. 23.1b (Install Plugs, Roof)
Fig. 23.2 (Install Insert Covers)
Insert Covers
Plastic Plugs
Fig. 24.1 (Install ROPS Caution Sticker)

CAB INSTALLATION
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POP-OUT WINDSHIELD
Your Workmaster 25S cab comes equipped with a pop-out
windshield for ventilation. To open the windshield, simply lift
up on both of the pop-out latches and rotate until the latches
rest in the over-center position.
Lift-Off Doors
Venting/Removable Rear Window
Pop-Out Windshield
CAB FEATURES & OPERATION
REMOVABLE REAR WINDOW
The rear window can also be removed for added ventilation.
To remove the rear window:
1. Open both window latches and disconnect from right rear
leg with tabs on latch. Open the window taking care not
to let the window open into the ROPS or damage may
occur.
2. From outside of the cab, lift up on the rear window and
slide off the hinges. Remove the hinge washers and
store in a plastic bag.
Store the rear window in a safe location to prevent damage.
To reinstall the rear window, reinstall the hinge washers, align
the hinges with the pins and drop into place. Re-attach the
latches to the rear leg.
LIFT-OFF DOORS
For added ventilation, the doors on the Workmaster 25S cab
lift off in seconds without tools.
To lift off:
1. Disconnect the gas strut from the side frame by sliding
the quick release lever and pulling the strut down.
2. Rotate the doors 90° to the cab and lift. Also, remove the
hinge washers and store in a plastic bag.
Store the doors in a safe location to prevent damage.

CAB INSTALLATION
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Removable Shroud Panel
Removable Lower Rear Panel
CAB FEATURES & OPERATION
BACKHOE OPERATION
On backhoe equipped vehicles, the lower rear panel will need
to be removed to operate the backhoe. Remove the Rear
Window First. Then remove mounting hardware from Lower
Rear Panel and store in a plastic bag.
Store the lower rear panel in a safe location to prevent
damage.
Tools required
3/8” Wrench or Socket
7/16” Wrench or Socket
REMOVABLE RADIATOR SHROUD
PANEL
Your Workmaster 25S series cab comes equipped with a
removable metal panel for extra air flow on hot summer days.
Should your temperature gauge climb on a hot day, follow this
procedure:
1. Make sure you provide ventilation to the cab by
venting windshield, venting or removing rear
window, or removing doors.
2. Remove the metal panel to allow additional air
flow to the radiator.
Remove mounting hardware and store in a plastic bag.
Store the metal panel in a safe location to prevent damage.
Warning! Never remove the panel without ventilating
the cab. This may cause Carbon Monoxide to be drawn into
the cab. Carbon Monoxide can cause illness, serious injury,
or death.
REMOVABLE RADIATOR SHROUD
The radiator shroud can be removed if required for sercice.
Below are the steps to do so:
1. Remove heater from heater bracket and let hang from
hoses. (see step 16.2).
2. Disconnect heater hoses at quick disconnects, see figure
17.3.
3. Remove thumbs nuts and slide shroud backwards. See
steps 4.3 and 7.2.
JUMP STARTING TRACTOR
How to jump start the tractor with Cab installed:
1. Connect red jumper to heavy gauge wire terminal on
starter.
2. Connect black to frame bolt – ground.