Curtis JOHN DEERE 4710, JOHN DEERE 4600, JOHN DEERE 4510, JOHN DEERE 4610, JOHN DEERE 4120, JOHN DEERE 4700, JOHN DEERE 4520, JOHN DEERE 4320, JOHN DEERE 4720 Installation & Owner's Manual
The contents of this envelope are the property of the owner.
Be sure to leave with the owner when installation is complete.
This Curtis Cab is designed and
manufactured for use only as reasonable
cable, Nor should the cab be considered as protection against
roll over, collision or other accidents that may result. This cab is
NOTaR.O.P.S.cab. Extreme care should be taken when operat-
ing and by qualified, experienced operators only.
INSTALLATION & OWNER’S MANUAL
weather protection. This cab is not appli-
CABS/BLADES/ SPREADERS/ACCESSORIES
Note: 4510 shown with soft sided
cab and optional work lights and
optional strobe light.
ExposuretoCarbonMonoxidecanCause
illness,seriousinjuryordeath.Never
Monoxide. 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.
operate vehicle if suspicious of Carbon
ADDED
WEIGHT
Curtis Cabs, blades and general accessories
add additional weight to the base vehicle. All
Curtis accessory weights are listed in product
brochures. Deduct the accessories total weight
from the vehicles rated capacity and never
excee d th e ve h ic le s r a ted c a p a c ity inc lu d ing
driver and passenger.
Rev. T, p. 1 of 11
p/n: IM-1JD4120
Page 2
DESIGN CONCEPT
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 instructions.
From all of us at Curtis, we thank you for choosing our product.
ADDED
WEIGHT
Curtis Cabs, blades and general accessories
add additional weight to the base vehicle. All
Curtis accessory weights are listed in product
brochures. Deduct the accessories total weight
from the vehicles rated capacity and never
exceed the vehicles rated capacity including
driver and passenger.
This Curtis Cab is designed and manu-
weather protection. This cab is not appl ic a ble, no r sh oul d
the cab be considered as protection against roll over,
collision or other accidents that may result. This cabs is
NOTaR.O.P.S.cab. Extreme care should be taken when
operating and by qualified, experienced operators only
factured for use only as reasonable
.
Never operate vehicle if suspicious of Carbon Monoxide.
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.
A. Leave all bolts loose for later adjustment unless otherwise specified.
B. Read and understand all instructions before beginning.
C. Plastic washers have been supplied to provide a weather seal around
all exterior fasteners. The plastic washer should be installed under each
bolt head directly against the outside cab surface. Care should be taken
not to over tighten the fasteners and damage the plastic washer.
Also use metal washers as required.
D. Apply a clear silicone sealant to seal any minor gaps that may occur due
to vehicle variances. For example, windshield cowl to unitized frames.
TOOLS REQUIRED:
7/16 IN.
3/8 DRIVE
SOCKET
3/8 IN.
DRILL BIT
7/16”, 1/2”, 7/8”, and 1”
OPEN END WRENCHES
1/2 IN.
NO. 2 MEDIUM
PHILLIPS HEAD
SCREWDRIVER
3/8 DRIVE
DEEP
SOCKET
10MM
3/8 DRIVE
SOCKET
3/16 INCH
ALLEN
DRIVE
3/8 DRIVE
3/8 IN.
ELECTRIC
HAND DRILL
3/8” DRIVE
RATCHET
p. 2 of 11
Page 3
1. VEHICLE PREP.
1.1 Remove both grab handles (one per side) (see fig. 1.1).
1.2 Remove, and discard the outer bolt and nut in each floorboard (see fig. 1.1).
1.3 Remove, and save two (2) plastic pins (per side) holding the floor mat down
(see fig. 1.1).
1.4 Tip driver’s seat forward.
1.5 Drill an oversized hole (3/8” dia.) thru plastic located behind seat and
shown in fig. 1.5. The drilled hole is to be exactly over the center of the
left weld nut. Transfer the hole location from the bottom up. (Note: take pre
cautions to avoid damaging the metric threads in the nuts welded below.)
plastic pins
( Suggestion: wedge plastic up in the air with a small piece of wood to keep
drill bit away from weld nut threads.) This hole will be used to fasten the rear
panel assembly in place (ref.: see fig. 2.3.1).
2. REAR PANEL ASSEMBLY
Fig. 1.1 Remove grab handle,
bolt, and two plastic pins/side
2.1 Pre-assemble lower rear panel, rear legs, and rear window support using a
total of eight (8) button head screws. (Note: the soft side version does not
have a rear window support). See fig. 2.1 for the all steel pre-assembly. To
attach the rear window support, use four 5/16” button head screws, steel
washers, and nylon washers. To attach the lower rear panel, use four 5/16”
button head screws, steel washers, nylon washers, and locknuts.
2.2 Install two (2) pieces of 1” round bulb rubber (28” long) on three (3) edges
per side as shown in fig. 2.1.
2.3 With assistance, and from the side of the tractor, place the pre-assembled unit
behind the seat and in between the roll bar uprights (see fig. 2.3). (Make sure
Fig. 1.5 Drill holes in plastic
the rubber seal that will rest on top of the fenders is facing outwards.) Secure
the bottom of the rear panel (thru the newly drilled hole) to the left metric
weld nut already in place. (See fig. 2.3.1) Use a 6mm x 1.0 x 20mm long hex.
head bolt and 6mm flat washer from the hardware kit.
2.4 Secure the lower rear panel to the roll bar using the existing roll bar bolts as
shown in fig. 2.4. Attach the rear panel mounts to the rear panel with the
locknuts being on the inside of the cab. Use two button head screws, plastic
washers, steel washers, and locknuts.
bolt
drill
not on
S.S. cabs
1” round bulb
metric bolt
CABS/BLADES/ SPREADERS/ACCESSORIES
Fig. 2.1
Pre-assemble
Rear Panel
Fig. 2.3.1
Secure
Rear Panel
Fig. 2.3 Install
Rear Panel
Assembly
Fig. 2.4
Rear Panel
Mount
roll bar bolt
p. 3 of 11
Page 4
3. FRONT COWL
3.1 For the 10 Series models
(ref.: 4510, 4610, and 4710):
Pre-assemble the cowl and the cowl insert using a total of four bolts (5/16-18
x 3/4” long), eight steel washers, four nylon washers, and four locknuts.
Note: fig. 3.1 shows the cowl insert and which four holes to bolt up initially
(bolt location “A”). Bolt the cowl insert to the inside surface of the cowl.
Note: the cowl insert and the associated hardware is only required on the 10
Series model numbers listed above.
3.2 Next, bolt the front legs onto the inside surface of the cowl insert so that the
cowl insert becomes sandwiched between the cowl and the front legs (bolt
location “B”). Attach the front legs using a total of two bolts (5/16-18 x 3/4”
long), four steel washers, two nylon washers, and two locknuts. Install 1”
bulb rubber (approximately 80”) along the sheet metal edges as shown in
reference fig. 3.2. Trim any extra bulb rubber.
3.3 For the 20 Series models (ref.: 4120, 4320, 4520, and 4720):
Pre-assemble the cowl and front legs (as shown in fig. 3.2) by fastening to gether at the inside hole only, using two 5/16” x 3/4” long button head
screws, steel washers, nylon washers, and locknuts. Locknuts to be on the
inside surface of the cowl assembly. Install 1” bulb rubber (approximately
80”) along the sheet metal edges as shown in fig. 3.2. Trim any extra bulb
rubber. Note: the cowl insert (shown in fig. 3.1) and the associated hardware
is NOT required on the 20 Series model numbers listed above.
A
A
B
front cowl insert
Fig. 3.1
10 Series
A
B
A
1” bulb rubber
bolt these
two places
only
front legs
Fig. 3.2
20 Series front cowl assembly
(outside surface shown)
cowl
CABS/BLADES/ SPREADERS/ACCESSORIES
p. 4 of 11
Page 5
3. FRONT COWL (cont’d.)
3.4 For all models, place the cowl assembly onto the tractor with the flap of
bulb rubber extended inward towards the passenger’s compartment as shown
in fig. 3.4.
4. SIDE FRAMES
4.1 Remove doors from side frames (for easier handling) by unlatching and slid-
ing up and off the hinge pins..
4.2 Install left and right side frames to vehicle as shown in fig. 4.2. The bottom
of the side frame is to be on top of the tractor floorboard, but under the rub-
ber mat and under the bottom, bent flange of the front cowl assembly. Fasten
to front cowl assembly and rear legs using 5/16 x 3/4” long button head
screws, steel washers, and nylon washers. Push the side frame back and in stall a new, longer floorboard bolt (3/8 x 1 1/2” long carriage bolt), washer,
and locknut. The bolt is to pass through the bottom of the side frame and the
floorboard.
5. FRONT WINDSHIELD SUPPORT
5.1 Install the front windshield support to the side frames with the bent flange
down. Install only the bottom two 5/16 x 3/4” long button head screws, steel
washers, nylon washers, and locknuts. (see fig. 5.1) (Note: the top holes will
get fasteners once the roof is installed.)
6. WINDSHIELD
6.1 With assistance, install the windshield to the windshield support (see fig.
6.1). Use four 5/16 x 1 3/4” long flat head screws and 3/4” thick plastic
spacer blocks (placed between the plastic hinge and the windshield support
as shown in fig. 6.1.1). Do not tighten.
6.2 To install windshield bottom latches into the cowl brackets, open windshield
slightly. Grasp and squeeze the spring-loaded tabs and cradle latches into
cowl brackets, aligning tab bosses with their respective mounting holes.
6.3 To close, grasp the windshield bottom edge and lift slightly while pushing
closed. Fully close latches. Align sides of windshield with side frames and
tighten hinges. HINGES ARE PLASTIC COMPONENTS. DO NOT OVER
TIGHTEN. TORQUE TO 7 FT./LBS. MAX.
7. ROOF
7.1 With assistance, install roof as shown using 5/16 x 3/4” lo n g but t o n head
screws, plastic washers, steel washers, and locknuts in all holes except the
middle ones on the left and right side (these two bolts do not require lock
nuts). (see fig. 7.1). (Also note: front left, and front right corners take 1”
long bolts)
8. REAR WINDOW (hard side only)
8.1 Install two (2) ball studs to the inner curved surface of the window (Note:
the Philips head portion of the screw is to be on the outside of the window.)
The base of the ball stud goes against the inner surface of the window, with
the boss sitting inside the window hole. Bolt these components together,
making sure that the ball portion of the ball stud is facing the outside edge of
the window as shown in fig. 8.1.1 (so that the gas shocks will be as close to
the edge of the window as possible.)
threaded inserts here
1” long bolt
Fig. 7.1 Install Roof
Ball stud
Window will be in here
Ball stud
Fig. 8.1 Loose ball
stud components
Plastic countersunk
washer w/ built in o-ring
and a short flat head screw
Inside of window
Fig. 8.1.1 Ball stud
assembly view
Gas shock
CABS/BLADES/ SPREADERS/ACCESSORIES
CABS/BLADES/ SPREADERS/ACCESSORIES
p. 6 of 11
Page 7
8. REAR WINDOW (continued)
8.2 Install rear window using same procedure as windshield. Once aligned and
tightened, open window and install gas springs to ball studs provided. Re-
lease latches from latch mounts and open window all the way in order to
snap the gas springs onto the ball studs. (see figures 8.2, 8.2.1, & 8.2.2).
Note: rear window has holes for optional wiper.
Note: rear window can be opened for ventilation, or latches can be com pletely released to access rear attachments.
9. FLOORBOARD (drill hole)
9.1 Line up the hole in the floorboard with the hole in the bottom, bent flange of
the front leg. Using these holes as a guide, drill thru the tractor floorboard
with a 3/8” drill bit as shown in fig. 9.1.
9.2 In this newly drilled hole, install a 5/16 x 3/4” long button head screw, steel
washers, and locknut.
9.2 Re-install the plastic pins to secure the floor mat.
10. DOORS
10.1 Install doors onto hinges. (see fig. 10.1) Work the doors back and forth
until
the hinges are completely seated. (NOTE: the hinges, inside latch, and
striker bolt can also be adjusted for proper engagement.)
10.2 On hard sided cabs install the gas springs to the frames and doors with
the small piston end towards the door. (See fig. 10.2) Press the button on the
compression fastener to lock the gas spring to the ball stud.
10.3 On soft sided cabs install the cable stops and hardware provided similar to
how the gas springs are installed (see 10.2). WARNING Do not attempt to
install gas springs on soft sided doors as this will damage to the doors!
10.4 Tighten all remaining bolts.
3/4” spacer
Fig. 8.2 Install Rear Window
latches
Fig. 8.2.1 Release latches
Gas Spring
Rear Window
drill here
Fig. 9.1 Line up holes
CABS/BLADES/ SPREADERS/ACCESSORIES
Fig. 8.2.2 Install Gas Springs
Fig. 10.1 Install Doors
Fig. 10.2 Gas
spring installation
p. 7 of 11
Page 8
11. REAR CURTAIN (soft sided only)
11.1 Install rear curtain by snapping to the inside back vertical edge of the roof.
(see fig. 11.1)
11.2 (NOTE: adhesive backed velcro should be applied to a clean, dry surface at
room temperature.) Apply self adhesive hook velcro, as needed, along the
rear legs and rear panel. Adhere rear curtain to newly applied velcro strips.
12. FINISHING TOUCHES
12.1 Install wiper motor per instructions included with the wiper kit.
12.2 Install 5/16” plastic nut covers on all interior 5/16” locknuts.
12.3 For the 00 Series and 10 Series models (ref.: 4500, 4600, 4700, 4510, 4610, and 4710):
Install vinyl front fillers by applying self adhesive hook velcro, as needed,
along the hood and front legs as shown in figure 12.3. (NOTE: adhesive
backed velcro should be applied to a clean, dry surface at room temperature.)
(NOTE: left, driver’s side shown, repeat for opposite side.) Install front vinyl
fillers to newly applied velcro strips.
12.4 For the 20 Series models (ref.: 4120, 4320, 4520, and 4720):
Cut the vinyl front fillers as shown in fig. 12.4. Cut along the white
lines shown on the photo being sure to cut on the appropriate side
of the loop velcro. The photo shows the loop velcro side up. The
long cut to be made should follow along the edge of the 5/8” wide
loop velcro so the loop velcro remains fully intact on the small
piece of vinyl that is labeled “keep for 20 Series”. The shorter cut
to be made is approximately parallel to the bottom edge as shown
(finished product is shown in fig. 12.4.1). Apply self adhesive
hook velcro, as needed, along the hood and front legs. (NOTE:
adhesive backed velcro should be applied to a clean, dry surface
at room temperature.) Install the newly cut (saved) portion of the
front filler to the newly applied hook velcro on the vehicle (not
shown).
12.5 Install the rear filler as shown in fig. 12.5 in the same manner
as the front fillers. If your tractor is equipped with a backhoe,
cut the filler around the hydraulic lines using snips.
discard for 20 Series
cut
lines
Hood
00 Series and 10 Series front filler installed
Rear filler
Fig. 11.1 Rear Curtain
Front leg
Vinyl filler
Fig. 12.3
keep for 20 Series
Fig. 12.4
20 Series front filler prep.
CABS/BLADES/ SPREADERS/ACCESSORIES
Fig. 12.4.1
20 Series front fillers
shown after being cut out
of larger 00 Series and 10
Series front fillers
Vinyl filler
Fig. 12.5
p. 8 of 11
Page 9
Care and Maintenance Instructions
* Check and tighten hardware after 40 hours of operation.
Periodically inspect and tighten hardware for the remainder of the unit’s life.
* Wash the painted surfaces of the unit with commercial automotive cleaning
products.
* Clean windows with glass cleaner.
* Vinyl components should be washed with a mild solution of warm soapy water.
* Clear vinyl can be easily scratched. Be careful cleaning frost or snow from
windows. Do not roll curtains in cold weather. The windows become stiff and
may crack. Keep windows clean.
IMPORTANT NOTICE
On 20 Series models, access Fuel Cap Filler as follows:
From inside of cab, open both pop-out windshield latches and disconnect latches at spring-loaded finger tabs.
Push windshield open far enough to fully open fuel cap filler cover.
Close windshield completely but do not rec o nnect sp ring-loaded finger tabs on latches at this time.
From outside of cab, fuel tractor being careful to prevent spillage.
When fueling is complete, open windshield far enough to close the fuel cap filler cover.
From inside of cab, reattach spring-loaded finge r tabs.
REV. A
CABS/BLADES/ SPREADERS/ACCESSORIES
p. 9 of 11
Page 10
J.D. 4000 SERIES HARD SIDED CAB PARTS LIST (p/n: 1JD4120AS)
ROOF
QTY. P/N
YELLOW
*
HEADLINER
REAR WINDOW
QTY. P/N
SUPPORT
GREEN
WINDSHIELD
SUPPORT
T-BLACK
*
HEYCO PLUGS
1/2" WEATHER
*
SEAL (INSIDE)
WINDSHIELD
QTY. P/N
COWL
GREEN
3/8" HEYCO
*
PLUGS (2)
(1" FLAT BULB)
1 JD4510-01
*
TRIM-LOK
3 SIDES
1 JD4510-05
1/2" WEATHER
*
SEAL (INSIDE)
QTY. P/N
1 JD4120-04
DECALS (INSIDE)
(SERIAL #, OPTIONS,
& R.O.P.S.)
1 JD4120-08A
WINDSHIELD LATCH
*
MOUNTS
REFLECTORS
*
LOGO
*
REAR PANEL
QTY. P/N
MOUNTS
T-BLACK
*
DECAL (STATING
FUEL FILL
PROCEDURE)
*
1/2" WEATHER
SEAL (INSIDE)
W/ 1/4" GRIP
QTY. P/N
WINDSHIELD
*
HINGES
LATCHES
*
QTY. P/N
REAR FILLER
FRONT
QTY. P/N
FILLERS
QTY. P/N
FRONT LEGS
2 JD4510-12
(1" FLAT BULB)
GREEN
*
HEYCO
PLUGS
LEFT
RIGHT
10 SERIES
COWL INSERT
GREEN
QTY. P/N
1 JD4510-02
SEAM BULB
*
5/8"
SIDE
BULB
1/4" GRIP
1 JD4510-16
1 JD4120-15LLEFT
1 JD4120-15RRIGHT
1 JD4120-10L
1 JD4120-10R
*
1/2" WEATHER
SEAL (INSIDE)
1 JD3520-17A
REAR WINDOW
QTY. P/N
SEAM BULB
GAS SHOCK
*
MOUNTS
(FACE OUT)
*
5/8"
SIDE
BULB
1/4" GRIP
LATCHES
*
LOWER
REAR PANEL
QTY. P/N
GREEN
1/2" WEATHER
*
SEAL (OUTSIDE)
QTY. P/N
REAR LEGS
GREEN
*
1/2" WEATHER SEAL
(ON SIDE SHOWN)
1" ROUND BULB
1 JD4510-03
*
HINGES
*
PLUGS
1 JD4510-06A
WINDSHIELD LATCH
*
MOUNTS
1/2" WEATHER
*
SEAL (INSIDE)
1/2" WEATHER
*
SEAL (OUTSIDE)
1" ROUND BULB
LEFT1 JD4510-11L
RIGHT 1 JD4510-11R
*
5/16" INSERTS
& BALL STUDS
UNITIZED SIDE
FRAMES HARD CAB
T-BLACK
*
5/16" - 18
INSERTS
7 PLACES
PER SIDE
* HINGE PIN
LH,RH
& HINGE
PLATES
RIGHT
* 1" ROUND
BULB
* HEATER
LABEL
(INSIDE)
QTY.1P/N
LEFT
1RIGHT
BALL STUD
* STRIKER
JD4510AS-09L
JD4510AS-09R
LEFT
*IN HOUSE APPLICATIONS
HARD DOORS
GREEN
* HINGE SLEEVES
RIGHT
* GRAB
HANDLE
* OUTSIDE
HANDLE
* 5/8" SIDE
BULB
LEFT
RIGHT
QTY.
1
1
P/N
JD4510AS-07L
JD4510AS-07R
BALL STUD
LEFT
* 1" HEYCO
PLUG
CABS/BLADES/SPREADERS/ACCESSORIES
* DOOR
LATCH
p. 10 of 11
Page 11
ROOF
QTY. P/N
YELLOW
*
HEADLINER
QTY. P/N
REAR FILLER
WINDSHIELD
SUPPORT
T-BLACK
*
HEYCO PLUGS
1/2" WEATHER
*
SEAL (INSIDE)
WINDSHIELD
QTY. P/N
COWL
GREEN
3/8" HEYCO
*
PLUGS (2)
(1" FLAT BULB)
J.D. 4000 SERIES SOFT SIDED CAB PARTS LIST (p/n: 1JD4120SS)
1 JD4510-01A
*
TRIM-LOK
3 SIDES
1 JD4510-16
QTY. P/N
1 JD4120-04
DECALS (INSIDE)
(SERIAL #, OPTIONS,
& R.O.P.S.)
1 JD4120-08A
WINDSHIELD LATCH
*
MOUNTS
W/ 1/4" GRIP
*
*
LOGO
SNAPS
*
*
1/2" WEATHER
SEAL (INSIDE)
REFLECTORS
*
REAR PANEL
QTY. P/N
MOUNTS
T-BLACK
DECAL (STATING
FUEL FILL
PROCEDURE)
10 SERIES
COWL INSERT
QTY. P/N
WINDSHIELD
*
LATCHES
*
QTY. P/N
FRONT LEGS
GREEN
RIGHT
*
HEYCO
PLUGS
(1" FLAT BULB)
1 JD4510-02
HINGES
1 JD4120-10LLEFT
1 JD4120-10R
*
1/2" WEATHER
SEAL (INSIDE)
FRONT
QTY. P/N
FILLERS
LEFT
RIGHT
2 JD4510-12
QTY. P/N
GREEN
1 JD3520-17A
SEAM BULB
*
5/8"
SIDE
BULB
1/4" GRIP
1 JD4120-15L
1 JD4120-15R
REAR CURTAIN
QTY. P/N
LOWER
REAR PANEL
QTY. P/N
GREEN
1/2" WEATHER
*
SEAL (OUTSIDE)
QTY. P/N
REAR LEGS
GREEN
*
1/2" WEATHER SEAL
(ON SIDE SHOWN)
1" ROUND BULB
1 JD4510-13
1 JD4510-06A
1/2" WEATHER
*
SEAL (INSIDE)
1/2" WEATHER
*
SEAL (OUTSIDE)
1" ROUND BULB
LEFT
1 JD4510-11L
RIGHT 1 JD4510-11R
*
5/16" INSERTS
& BALL STUDS
UNITIZED SIDE
FRAMES SOFT CAB
T-BLACK
*
5/16" - 18
INSERTS
7 PLACES
PER SIDE
* HINGE PIN
LH,RH
& HINGE
PLATES
RIGHT
* 1" ROUND
BULB
* HEATER
LABEL
(INSIDE)
QTY.
1LEFT
P/N
JD4510SS-09L
JD4510SS-09R1RIGHT
* STRIKER
LEFT
*IN HOUSE APPLICATIONS
RIGHT
SOFT DOORS
BLACK POLY
YELLOW VINYL
* HINGE SLEEVES
* GRAB
HANDLE
* OUTSIDE
HANDLE
* 5/8" SIDE
BULB W/
1/4" GRIP
LEFT
RIGHT
QTY.
1
1
LEFT
P/N
JD4510SS-07L
JD4510SS-07R
* 1" HEYCO
PLUG
* DOOR
LATCH
CABS/BLADES/SPREADERS/ACCESSORIES
p. 11 of 11
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