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Curtis 1JDZ994RPR Installation & Owner's Manual

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While this cab kit was designed to fit on the vehicle 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.
Available Options:
1. Side View Mirrors (P/N: 9PM5)
2. Switch Panel (P/N: 1JDZ994RCK) (req'd for following 2 items)
3. Front LED Work Lights (P/N: 1ZTRLK)
4. Front Wiper/Washer Kit (P/N: 1ZTRWK)
Approximate Installation Time *
Experienced Dealer Technician – 4 Hours
Average Dealer Technician – 6 Hours
Do-It-Yourself – 6-8 Hours
(*=Not including accessories)
Register your new product quickly online at
Curtiscab.com/product-registration/
Curtis encourages all customers to register their
Curtis products. However, failure to do so will not
diminish right to warranty. Curtis Industries does not
sell or share your information with anyone else.
The contents of this envelope are the property of the owner. Leave with the owner when installation is complete.
John Deere Z994R
(p/n: 1JDZ994RPR)
Cab with A/C
(fits both 60" and 72" mower decks.
Does not fit with mulching or 54" deck)
Requires Premium Seat
Premium Cab Shown with Options
Approximate Product Specifications
Floorboard to Roof Height: 59 inches
Weight: 332 lbs.
Cab Width: 50 inches
Download a digital copy of your installation
instructions online at Curtiscab.com/literature/
Curtis strives to continuously improve our products,
technical documentation, etc. Therefore, the
installation manual for this product may have been
updated after your product was packaged. The
latest revision of the installation manual can always
be found at the website above.
1 of 34
Rev. B, 10/25/2022
p/n: IM-1JDZ994RPR

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Summary of Contents for Curtis 1JDZ994RPR

  • Page 1 Therefore, the Curtis encourages all customers to register their installation manual for this product may have been Curtis products. However, failure to do so will not updated after your product was packaged. The diminish right to warranty. Curtis Industries does not latest revision of the installation manual can always sell or share your information with anyone else.

  • Page 2: Table Of Contents

    2 of 34 TABLE OF CONTENTS WARNINGS, TIPS, & REQUIRED TOOLS ............3 VEHICLE PREP ................... 4-12 CAB INSTALLATION ................. 13-24 CAB FEATURES & OPERATION ..............24 CARE AND MAINTENANCE ................25 TROUBLESHOOTING ..................25 SERVICE PARTS ..................26-32 BOLT TORQUE SPECIFICATIONS ............33-34...

  • Page 3: Warnings, Tips, & Required Tools

    3 of 34 WARNINGS, TIPS, & REQUIRED TOOLS 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.

  • Page 4: Vehicle Prep

    4 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP) Park vehicle in a location accessible by an overhead hoist. 1.2 Disconnect the negative battery terminal. Remove 1.3 Remove screw and P-Clamp found on the engine holding wire harness in place. See Fig. 1.3. Tools required 13mm socket Fig.
  • Page 5 5 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP CONT’D.) Apply Finger Pressure Here 1.7 Loosen alternator and remove OEM pulley and spacer. inside “V” Install double V-Belt Pulley, per Fig 1.7. Re- tension belt, apply finger pressure to the belt approximately halfway between the alternator and water pump pulleys.
  • Page 6 1.11 Install Bracket and Spacer assembly from Step Retainer 1.10, on the outside of the right R.O.P.S. as well & Sleeve Curtis Bracket and as the sleeve and retainer with new M8X1.25 Nut Spacer per fig 1.11. Leave hardware loose.
  • Page 7 7 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP CONT’D.) 1.15 Remove ballast box from shipping pallet. Next, Top of Footrest Lip Backing Plate install ballast box on the font edge, of the vehicle. Installing top bolts first into the vehicles floorboard (do not fully tighten).
  • Page 8 8 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP CONT’D.) 1.18 Tilt the seat forward. Seat Latch Bar 1.19 Disconnect 2-pin connector from the underside of the seat Remove harness clip from the seat frame Remove/set aside spring lock pin from prop rod. While holding the seat, remove the prop rod from the seat frame and set the seat back down.
  • Page 9 9 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP CONT’D.) 1.21 Apply 5/8” wide P.S.A. Velcro to the bottom edge Apply Velcro of Arm Restrictors. See Fig. 1.21. Tools required Scissors 1.22 Install the arm restrictors using 1/4-20 hardware, making sure the locating pin is on the front hole as shown in Figure 1.22.
  • Page 10 10 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP CONT’D.) 1.24 Remove and set aside the (4) nuts and washers holding the seat frame to the seat adjuster rails. Next, remove frame from the seat. See Figure 1.24. Tools required 13mm deep socket Remove and Set Aside 1.25 Install (4) Clip-On Nuts using a socket to push...
  • Page 11 11 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP CONT’D.) 1.28 Re-install seat with seat pan assembly back onto the vehicle by re-installing OEM hinge bolts and nuts per figure 1.28. Tools required Re-Install 13mm socket and wrench 1.29 Tilt the seat forward, while holding the seat, re- install the prop rod to the seat frame and re-install spring lock pin.
  • Page 12 12 of 34 CAB INSTALLATION STEP 1: (VEHICLE PREP CONT’D.) Compressor Rear Shipping Mount Bracket 1.31 Remove compressor (with guard) and tensioner from the compressor mount (keep 3/8” hardware Guard with compressor). Support the compressor using a bungee cord or rope. Do not ever use the hoses to support the compressor or damage may occur.
  • Page 13 13 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) Remove the doors from the cabin and set aside carefully to prevent scratching the panels. 2.2 Lower the mower deck to 2” 2.3 Position a lifting strap so that it sits roughly 7-1/2” behind the gas shock mount as shown in Figure 2.3.
  • Page 14 14 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) Install 2.7 Install the back of the cab to R.O.P.S mounts per Figure 2.7. Hardware Used 5/16-18X1-3/4” Flange Hex Screw 5/16-18 Flange Lock Nut Tools required 1/2” wrench and socket 2.8 Install the front of the cab to front mounts per Fig.
  • Page 15 15 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.11 To install the compressor, run hoses from the left to right side of the vehicle over the engine. Next, re-install the compressor onto the compressor mount. See Figures 2.11a and b. Tools required 9/16”...
  • Page 16 16 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.14 Slide the seat rearward then tilt seat forward. Into Inserts 2.15 Install right filler onto the cab from the outside Into Lock Nuts using provided hardware per Figure 2.15. Note: side screws have lock nuts on the inside.
  • Page 17 17 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.18 Place the rear panel assembly onto the R.O.P.S. brackets apply pressure towards the AC Unit. Install the top horizonal screws first and then the Install 1/4-20X3/4” First (4) screws in two rear fillers. Attach to the previously installed Velcro.
  • Page 18 18 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.21 Slide the supplied right hand drive handle boot down over the drive handles. (The right filler does not have the hole shown in Figure 2.22) Press the sewn on foam into the gap between the Mark for Velcro frame and fender and attach the boot to the pre- installed Velcro.
  • Page 19 19 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) Air Restriction Air Intake Indicator 2.23 Remove the (2) clips found on the sides of the air cleaner mount and set aside. See Figure 2.23a. Rotate both the elbow that houses the “Air Restriction Indicator“...
  • Page 20 20 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.26 Secure the larger AC hose and the wire harness to the ROPS brackets using p-clamps as shown in Figure 2.26. Hose Clamps Adjust hose and clamps so that the hoses are away from the hot muffler when p-clamps are tightened.
  • Page 21 21 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.28 Per Figures 2.28a and b, run compressor part of the AC wire harness (ring and push-on terminals) to the compressor. Remove 3/8” Lock Nut and install ground ring terminal. Re-install 3/8” Lock Nut and connect the push-on terminal to terminal found on the compressor.
  • Page 22 22 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.31 Re-install the modified grille using (2) screws removed on step 1.4 to secure the left side. See Figure 2.31. Hardware Used Use hardware set aside on step 1.4 Tools required T25 Torx Bit 2.32 Install Compressor Shroud onto right side of vehicle using (2) screws removed from step 1.4...
  • Page 23 23 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) Bracket 2.34 Per Figure 2.34, tighten hardware clamping the right fender. Making sure retainer sits in groove Retainer found in fender. Note: 5/16-18 screw may need to be adjusted so compressor shroud has proper fit with bracket.

  • Page 24: Cab Features & Operation

    24 of 34 CAB INSTALLATION STEP 2: (CAB INSTALLATION) 2.37 Lower the seat down. 2.38 Turn on vehicle and test operation of the A/C Unit. If the A/C Unit does not function properly, check Set Blower Speed out the “Troubleshooting” section of this manual. See Figure 2.38 for basic A/C operation.

  • Page 25: Care And Maintenance

    25 of 34 CARE AND MAINTENANCE •DO NOT use glass cleaner to clean windows. It will damage the material. Mild dish soap and water should be used to clean all window panels. Use a soft bristled brush or sponge to clean panels. •Avoid wiping the windows while they are dry.

  • Page 26: Service Parts

    26 of 34 JOHN DEERE Z994R SERVICE PARTS PULLEY, DOUBLE, 34 DEG V-BELT MNT BRACKET ASS'Y, COMPRESSOR SPACER, RIGHT FENDER P/N: 8SV-113-00316 P/N: 9SV-MP-00077 P/N: 8SV-SM-02425 MOUNT BRACKET, FB, LEFT MOUNT BRACKET, FB, RIGHT BACKING PLATE, BALLAST BOX P/N: 8SV-SM-02455-L P/N: 8SV-SM-02455-R P/N: 8SV-SM-02478 BALLAST BOX W/ WEIGHTS...
  • Page 27 27 of 34 JOHN DEERE Z994R SERVICE PARTS LEVER, SEAT RELEASE ROPS MOUNT ASSEMBLY, LEFT SEAT PAN ASSEMBLY P/N: 8SV-SM-02391 P/N: 8SV-110-00118-L P/N: 8SV-113-00314 ROPS MOUNT ASSEMBLY, RIGHT WELDMENT, COMP. MOUNT WELDMENT, COMP. TENSIONER P/N: 8SV-110-00118-R P/N: 8SV-WA-00554 P/N: 8SV-WA-00555 COMPRESSOR,SECT.
  • Page 28 28 of 34 JOHN DEERE Z994R SERVICE PARTS WIRE HARNESS, A/C REAR FILLER, RIGHT REAR PANEL ASSEMBLY P/N: 9SV-WH-00147 P/N: 8SV-111-00046-R P/N: 8SV-106-00047 DRIVE HANDLE FILLER ASSY (1L, 1R) AIR FILTER RELOCATION BRACKET W/ VELCRO; P/N: 8SV-112-00082 P/N: 8SV-SM-02318 COVER ASSY, SIDE, COMPRESSOR A/C UNIT, REAR MOUNTED, BLACK P/N: 8SV-113-00315 P/N: 8SV-301-00006-BP...
  • Page 29 29 of 34 JOHN DEERE Z994R SERVICE PARTS CONDENSER CLAMP ASSEMBLY, A/C, CONDENSER CLAMP ASSEMBLY, A/C, HOSE, #8, COMP TO COND BOTTOM, BLACK; P/N: 8SV-304-00031-BP SIDE, BLACK; P/N: 8SV-304-00030-BP P/N: 8SV-305-00022 HOSE, #10 EVAP TO COMP HOSE, #6, COND TO DRYER HOSE, #6, DRIER TO EVAP P/N: 8SV-305-00024 P/N: 8SV-305-00025...
  • Page 30 30 of 34 JOHN DEERE Z994R SERVICE PARTS ROOF ASSEMBLY WINDSHIELD SUPPORT ASSEMBLY WINDSHIELD ASSEMBLY P/N: 8SV-101-00067 P/N: 8SV-103-00031 P/N: 8SV-102-00041 SIDE FRAME ASSEMBLY, RIGHT SIDE FRAME ASSEMBLY, LEFT P/N: 8SV-109-00028-R P/N: 8SV-109-00028-L DOOR ASSEMBLY, RIGHT DOOR ASSEMBLY, LEFT P/N: 8SV-107-00060-L P/N: 8SV-107-00060-R REAR LEG, LEFT, W/ HARDWARE REAR LEFT FILLER WINDOW, W/...
  • Page 31 31 of 34 JOHN DEERE Z994R SERVICE PARTS WELDMENT, LOWER BRACE, LEFT REAR RIGHT FILLER WINDOW, W/ WELDMENT, LOWER BRACE, RIGHT P/N: 8SV-WA-00574-L HARWARE + RUBBER; P/N: 8SV-P-00169 P/N: 8SV-WA-00574-R WINDSHIELD SUPPORT, LOWER DOOR SKIN, RIGHT, W/HARDWARE P/N: 8SV-SM-02454 P/N: 9SV-P-00167-R A-PILLAR CLAMP, UPPER, LEFT P/N: 8SV-SM-02361-L DOOR SKIN, LEFT, W/HARDWARE...
  • Page 32 32 of 34 ADDITIONAL SERVICE PARTS PART NUMBER DESCRIPTION 9SV-HWK-00182 HARDWARE KIT, JDZ994 9SV-OHRL-G OUTSIDE DOOR HANDLE (SET OF 2) 9SV-GH INTERIOR GRAB HANDLE (SET OF 2) 9SV-HSLP HINGE PINS AND SLEEVES (2L + 2R) 9SV-DP10 DOME PLUG, .375” HOLE (BAG OF 10) 9SV-DP16 DOME PLUG, .750”...

  • Page 33: Bolt Torque Specifications

    33 of 34 Torque Specs. for Structural Bolts This page is for use primarily when dealing with high-strength vehicle fasteners such as ROPS hardware that hold the structure together for safety. This page can also be used for other solid metal-to-metal joints. Do not use these high torque values on any of the following applications involving: tubing, plastic, nylon or rubber washers, threaded inserts, etc..
  • Page 34 Tightening of Non-Structural Bolts For light or medium duty fastening, Curtis recommends using a general industry standard of tightening until snug and then giving an additional one quarter turn of the tool as deemed reasonable for the application (i.e.: at the installer’s discretion).