Waltco MDL & MDLBG-Series Models 430-436 Liftgate Parts Diagrams | Approximate Years Pre-2000
Pre-2000 Waltco MDL & MDLBG-Series Models 430-436 liftgate parts reference
Review Waltco MDL & MDLBG-Series Models 430-436 parts breakdowns for older pre-2000 rail lift units. This page helps identify liftgate components and confirm the right OEM replacement parts.
Compatibility and Purchasing Notice
Although the information on this page is taken from an OEM lift gate manual, if you're unsure whether this data matches your exact model and year, PLEASE contact our team. Part numbers can vary by year - even within the same model - and we're always happy to confirm the correct parts for you.
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H-FRAME ASSEMBLY – STANDARD
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 43012283 | H Frame, MDL-12 | ||
| 1 | 43220786 | H Frame, MDL-16, 20 | ||
| 1 | 43320368 | H Frame, MDL-30 | ||
| 1 | 1 | 43012050 | Rail, Curb Side, MDL-12 | |
| 1 | 1 | 43120054 | Rail, Curb Side, MDL-16, 20, 30 | |
| 2 | 1 | 43012051 | Rail, Street Side, MDL-12 | |
| 2 | 1 | 43120055 | Rail, Street Side, MDL-16, 20, 30 | |
| 3 | 1 | 43020048 | Travel Plate, Curb Side | |
| 4 | 1 | 43020051 | Travel Plate, Street Side | |
| 5 | 1 | 43020039 | Travel Plate Latch | |
| 6 | 1 | 75086218 | Hex Bolt, 3/8”-16 x 1-1/4”, Grade 8 | |
| 7 | 1 | 75086056 | Hex Screw, 3/8-16 x 1”, Grade 5 | |
| 8 | 1 | 75089505 | Aircraft Pin | |
| 9 | 2 | 75085188 | Lock Nut, 3/8”-16, Centerlock | |
| 10 | 1 | 75089760 | Spring | |
| 11 | 2 | 75089518 | Clevis Pin | |
| 12 | 1 | 43020029 | Access Door | |
| 13 | 5 | 75086062 | Hex Bolt, ¼-20 x 3/4 | |
| 14 | 5 | 75085164 | Tinnerman Nut, ¼” | |
| 15 | 2 | 75089564 | Rail Cap |
Reference Notice
Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
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H-FRAME ASSEMBLY – ABOVE FLOOR (AF)
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 43016359 | H Frame, MDL-12 | ||
| 1 | 43220787 | H Frame, MDL-16, 20 | ||
| 1 | 43320369 | H Frame, MDL-30 | ||
| 1 | 1 | 43020082 | Rail, Curb Side | |
| 2 | 1 | 43020083 | Rail, Street Side | |
| 3 | 2 | 43016085 | Chain Cover | |
| 4 | 2 | 43016152 | Travel Plate | |
| 5 | 2 | 43020080 | Sprocket box | |
| 6 | 1 | 43020029 | Access Door | |
| 7 | 5 | 75086062 | Hex Bolt, ¼-20 x 3/4 | |
| 8 | 5 | 75085164 | Tinnerman Nut, ¼” |
INTERNAL H-FRAME COMPONENTS (INCLUDES ABOVE FLOOR)
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 43020013 | Sprocket, 13T, #50 Chain, MDL-12, 16, 20 | ||
| 1 | 43330007 | Sprocket, 11T, #60 Chain, MDL-30 | ||
| 2 | 43020016 | Sprocket Pin | ||
| 3 | 43020018 | Pin Retainer | ||
| 4 | 7500012-1 | ¼” Lock Washer | ||
| 5 | 75086874 | ¼”-20 x 5/8” lg. Hex Head Self Tapping Screw | ||
| 6 | 75085111 | Hex Nut, 5/8”-18, Grade 8 | ||
| 7 | 43020014 | Chain Anchor Bolt, 5/8”-18, #50 Chain, MDL-12, 16, 20 | ||
| 7 | 43330003 | Chain Anchor Bolt, 5/8”-18, #60 Chain, MDL-30 | ||
| 8 | 80000419 | Roller Chain Master Link, #50 Chain, MDL-12, 16, 20 | ||
| 8 | 80000609 | Roller Chain Master Link, #60 Chain, MDL-30 | ||
| 9 | 82011015 | Roller Chain, #50, MDL-12, 16, 20 | ||
| 9 | 82011016 | Roller Chain, #60, MDL-30 |
Reference Notice
Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
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LIGHT OPTION
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 2 | 43016075 | 4 Light Kit | ||
| 2 | 43016076 | 6 Light Kit | ||
| 1 | 2 | 43016093 | Light Harness, 4 Lights | |
| 1 | 2 | 43016073 | Light Harness, 6 Lights | |
| 2 | 4/6 | 75089396 | Light Grommet | |
| 3 | 2 | 75089393 | Light, Red | |
| 4 | 2 | 75089392 | Light, Yellow (Only on 6 Light Kits) | |
| 5 | 2 | 75089394 | Light, White |
PLATFORM ASSEMBLY, STEEL – MANUAL FOLD
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 43010001 | Platform Comp., 30x89+6 (Items 1-12) | |
| 1 | 1 | 43010000 | Platform Comp., 36x89+6 (Items 1-12) | |
| 1 | 1 | 43110001 | Platform Comp., 42x89+6 (Items 1-12) | |
| 1 | 1 | 43310000 | Platform Comp., 36x89+6 (Items 1-12) | |
| 1 | 1 | 43310001 | Platform Comp., 42x89+6 (Items 1-12) | |
| 1 | 1 | 43322000 | Platform Comp., 48x89+6 (Items 1-12) | |
| 1 | 1 | 43016372 | Platform Assy, 30x89+6 | |
| 1 | 1 | 43016373 | Platform Assy, 36x89+6 | |
| 1 | 1 | 43180620 | Platform Assy, 42x89+6 | |
| 1 | 1 | 95099087 | Platform Assy, 30x89+6 | |
| 1 | 1 | 43390087 | Platform Assy, 36x89+6 | |
| 1 | 1 | 43380621 | Platform Assy, 42x89+6 | |
| 1 | 1 | 43316875 | Platform Assy, 48x89+6 | |
| 2 | 1 | 43016689 | Hinge Pin Assy, Curb Side, 3/8” TB | |
| 2 | 1 | 43016690 | Hinge Pin Assy, Curb Side, 1/2” TB | |
| 2 | 1 | 43016691 | Hinge Pin Assy, Curb Side, 9/16” TB | |
| 3 | 1 | 43016689 | Hinge Pin Assy, Street Side, 3/8” TB | |
| 3 | 1 | 43016790 | Hinge Pin Assy, Street Side, 1/2” TB | |
| 3 | 1 | 43016691 | Hinge Pin Assy, Street Side, 9/16” TB | |
| 4 | 2 | 43020205 | Hinge Pin Collar | |
| 5 | 2 | 7500047-6 | Collar Set Screw, ¼”-20 x 3/8” | |
| 6 | 1 | 43020237 | Torsion Bar, 3/8” x 81”, RH Pin | |
| 6 | 1 | 43020241 | Torsion Bar, 1/2” x 81”, RH Pin | |
| 6 | 1 | 43020245 | Torsion Bar, 9/16” x 81”, RH Pin | |
| 7 | 1 | 43020237 | Torsion Bar, 3/8” x 81”, LH Pin | |
| 7 | 1 | 43020241 | Torsion Bar, 1/2” x 81”, LH Pin | |
| 7 | 1 | 43020245 | Torsion Bar, 9/16” x 81”, LH Pin | |
| 8 | 1 | 75089294 | Rubber Handle | |
| 9 | 2 | 43020213 | Side Chain (46-1/2” lg.) | |
| 10 | 2 | 43016382 | Side Chain Sleeve | |
| 11 | 2 | 75080125 | Side Chain U-Bolt | |
| 12 | 4 | 75085178 | Side Chain U-Bolt Nut | |
| 1 | 1 | Platform Comp., 30x89+6 (Items 1-12) |
Reference Notice
Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
Have your liftgate serial number ready for faster assistance. Where to find it
PLATFORM ASSEMBLY, ALUMINUM – MANUAL FOLD (Built from 4-09 thru 9-10)
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 43020693 | Platform Assy, 30x89+6 | |
| 1 | 1 | 43020694 | Platform Assy, 36x89+6 | |
| 1 | 1 | 43120695 | Platform Assy, 42x89+6 | |
| 1 | 1 | 43120696 | Platform Assy, 48x89+6 | |
| 1 | 1 | 43120697 | Platform Assy, 54x89+6 | |
| 1 | 1 | 43120698 | Platform Assy, 60x89+6 | |
| 2 | 1 | 43016690 | Hinge Pin Assy, Curb Side, 1/2” TB | |
| 2 | 1 | 43016691 | Hinge Pin Assy, Curb Side, 9/16” TB | |
| 3 | 1 | 43016689 | Hinge Pin Assy, Street Side, 3/8” TB | |
| 3 | 1 | 43016790 | Hinge Pin Assy, Street Side, 1/2” TB | |
| 4 | 2 | 43020205 | Hinge Pin Collar | |
| 5 | 2 | 7500047-6 | Collar Set Screw, ¼”-20 x 3/8” | |
| 6 | 1 | 43020237 | Torsion Bar, 3/8” x 81”, RH Pin | |
| 6 | 1 | 43020241 | Torsion Bar, 1/2” x 81”, RH Pin | |
| 6 | 1 | 43020245 | Torsion Bar, 9/16” x 81”, RH Pin | |
| 7 | 1 | 43020237 | Torsion Bar, 3/8” x 81”, LH Pin | |
| 7 | 1 | 43020241 | Torsion Bar, 1/2” x 81”, LH Pin | |
| 8 | 1 | 75089294 | Rubber Handle | |
| 9 | 2 | 43020213 | Side Chain (46-1/2” lg.) | |
| 10 | 2 | 43016382 | Side Chain Sleeve | |
| 11 | 2 | 75080125 | Side Chain U-Bolt | |
| 12 | 4 | 75085178 | Side Chain U-Bolt Nut | |
| 13 | 2 | 43020174 | Torsion Bar Cover |
SLIDER ASSEMBLY
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 43016693 | Slider Assy, DS, MDL-12 | |
| 1 | 1 | 43116606 | Slider Assy, DS, MDL-16, 20, 30 | |
| 2 | 1 | 43016694 | Slider Assy, CS, MDL-12 | |
| 2 | 1 | 43116607 | Slider Assy, CS, MDL-16, 20, 30 | |
| 3 | 1 | 43016695 | Slider Extrusion, DS, MDL-12 | |
| 3 | 1 | 43116599 | Slider Extrusion, DS, MDL-16, 20, 30 | |
| 4 | 1 | 43016696 | Slider Extrusion, CS, MDL-12 | |
| 4 | 1 | 43116600 | Slider Extrusion, CS, MDL-16, 20, 30 | |
| 5 | 2 | 43016603 | Slider Foot | |
| 6 | 2 | 43016605 | Slider Stop | |
| 7 | 2 | 95016677 | Slider Stop, Special Platform | |
| 8 | 2 | 43016602 | Wear Pad, Back | |
| 9 | 4 | 43116601 | Wear Pad, Front | |
| 10 | 8 | 75086708 | Screw, #10-32 x 3/8” Flat Head Socket | |
| 11 | 2 | 43020006 | Chain Anchor Block, MDL-12, 16, 20 | |
| 11 | 2 | 43330002 | Chain Anchor Block, MDL-30 | |
| 12 | 2 | 80000419 | Roller Chain Master Link, #50 Chain, MDL-12, 16, 20 | |
| 12 | 2 | 80000609 | Roller Chain Master Link, #60 Chain, MDL-30 | |
| 13 | 4 | 75085994 | Screw, 5/16”-18 x 1” Flat Head Socket |
Reference Notice
Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
Have your liftgate serial number ready for faster assistance. Where to find it
PLATFORM AND FENCE
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 95030542 | Platform, 30x89+14x42 | |
| 2 | 1 | 95030480 | Fence Assy, CS | |
| 3 | 1 | 95030484 | Fence Assy, DS | |
| 4 | 1 | 95030483 | Fence Upright, CS | |
| 5 | 1 | 95030583 | Fence Upright, DS | |
| 6 | 2 | 95030477 | Fence Arm | |
| 7 | 2 | 75089594 | Anti-Luce | |
| 8 | 1 | 95030202 | Flip Ramp Assy, 14x42 | |
| 9 | 2 | 7500010-27 | Flip Ramp Hinge Bolt |
PLATFORM AND FENCE (Built from 8-09)
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 43616999 | Platform, 30x89+16x45 | |
| 2 | 1 | 43617003 | Fence Assy, CS | |
| 3 | 1 | 43617004 | Fence Assy, DS | |
| 4 | 1 | 43630442 | Fence Upright, CS | |
| 5 | 1 | 43630572 | Fence Upright, DS | |
| 6 | 2 | 43617001 | Fence Arm | |
| 7 | 2 | 75089594 | Anti-Luce | |
| 8 | 1 | 42669334 | Flip Ramp Assy, 16x45 | |
| 9 | 2 | 7500010-27 | Flip Ramp Hinge Bolt |
Reference Notice
Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
Have your liftgate serial number ready for faster assistance. Where to find it
HYDRAULIC & ELECTRICAL COMPONENTS
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 43020849 | Hydraulic Pump Unit, 2400 PSI, 10” Reservoir, MDL-12 | |
| 1 | 1 | 43020848 | Hydraulic Pump Unit, 2400 PSI, 14” Reservoir, MDL-16, 20, 30 | |
| 2 | 1 | 7043001-1 | Motor, 12V w/ Thermal Protection | |
| 3 | 1 | 70400828 | Reservoir, 10” | |
| 3 | 1 | 43016835 | Reservoir, 14” | |
| 4 | 1 | 70092355 | Relief Valve | |
| 5 | 1 | 80001065 | Motor Solenoid | |
| 6 | 1 | 70092503 | Valve, 2 way, 2 pos w/ Coil | |
| 7 | 1 | 75083364 | Elbow, 90°, ¼ JICM x #6 SAE | |
| 8 | 1 | 70091734 | Breather | |
| 9 | 1 | 10195908 | Solenoid Cable | |
| 10 | 1 | 43010179 | Switch Assy, 2 way, 5ft. | |
| 11 | 1 | 7500026-5 | Elbow, 90° Barb | |
| 12 | 1 | 7500026-6 | Elbow, 90° Barb | |
| 13 | 1 | 43040082 | Tube, Flexible PVC, 3/16” ID x 60” | |
| 14 | 1 | 10195635 | Battery Cable, 2 Ga. x 35 ft. | |
| 15 | 1 | 43220894 | Hose Assy, ¼” x 18” lg. ¼ JIC Female | |
| 16 | 1 | U20453 | 135 Amp Circuit Breaker | |
| 17 | 1 | 75089790 | Master Disconnect Switch |
POWER CLOSE OPTION
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 43216681 | Slider Assy, GOPC, DS | |
| 2 | 1 | 43216682 | Slider Assy, GOPC, CS | |
| 3 | 1 | 43216667 | Slider Foot, GOPC, DS | |
| 4 | 1 | 43216651 | Slider Foot, GOPC, CS | |
| 5 | 1 | 43220882 | Hose Guard, GOPC | |
| 6 | 1 | 43216800 | Cylinder, GOPC | |
| 7 | 1 | 75083371 | Elbow, 90°, ¼ JICM x #6 SAE w/ .031” Orifice | |
| 8 | 1 | 75083361 | Elbow, 90°, Bulkhead, ¼ JICM x ¼ JICM | |
| 9 | 1 | 43220893 | Hose Assy, GOPC | |
| 10 | 1 | 43220880 | Pin, Upper GOPC | |
| 11 | 2 | 43216642 | Slider Spacer | |
| 12 | 1 | 43220881 | Pin, Lower GOPC | |
| 13 | 1 | 43220895 | Selector Valve | |
| 14 | 8 | 75086218 | Hex Bolt, 3/8”-16 x 1-1/4” Grade 8 | |
| 15 | 1 | 43220894 | Hose Assy, ¼” x 18” lg, ¼ JIC Female | |
| 16 | 1 | 43220894 | Hose Assy, ¼” x 18” lg, ¼ JIC Female | |
| 17 | 1 | 34036750 | Rubber Bumper | |
| 18 | 1 | 75088053 | Washer, 3/8” ID x 1” OD x .078” Thk. | |
| 19 | 1 | 75086844 | Screw, Self Taping, 5/16” x 1” | |
| 20 | 2 | 75083362 | Elbow, 90°, ¼ JICM x #4 SAE | |
| 21 | 1 | 75083363 | Adapter, ¼” SAE x ¼” NPTM | |
| 22 | 1 | 43220879 | Wire Harness, MDL GOPC Valve |
Reference Notice
Manual links are provided for reference only. If you have any doubt, contact us — we’re happy to verify parts and help you purchase with confidence.
Have your liftgate serial number ready for faster assistance. Where to find it
CYLINDER ASSEMBLY
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 43010123 | Cylinder Assy Complete, MDL-12 | ||
| 1 | 43020578 | Cylinder Assy Complete, MDL-12AF, MDL-16, 20 | ||
| 1 | 43330117 | Cylinder Assy Complete, MDL-30 | ||
| 1 | 1 | 43012133 | Cylinder, 2” x 22-1/2” (Includes Head) | |
| 1 | 1 | 43016132 | Cylinder, 2” x 27-1/8” (Includes Head) | |
| 1 | 1 | 43340111 | Cylinder, 2-1/2” x 27” (Includes Head) | |
| 2 | 1 | 43012109 | Cylinder Head, Weld, MDL-12, 16, 20 | |
| 2 | 1 | 43320111 | Cylinder Head, Weld, MDL-30 | |
| 3 | 1 | 43020013 | Sprocket, 13T, #50 Chain | |
| 3 | 1 | 43330107 | Sprocket, 16T, #60 Chain | |
| 4 | 1 | 43020108 | Sprocket, 19T, #50 Chain | |
| 4 | 1 | 43330106 | Sprocket, 22T, #60 Chain | |
| 5 | 1 | 75083355 | Elbow, #6 SAE Male x ¼” NPT Male | |
| 6 | 1 | 7010001-15 | Pressure Comp. Valve, 2.5 GPM | |
| 6 | 1 | 7010001-16 | Pressure Comp. Valve, 4.0 GPM | |
| 7 | 1 | 75083039 | Adapter, ¼” NPT Male x #4 JIC Male | |
| 8 | 2 | 43020016 | Sprocket Pin | |
| 9 | 2 | 7500012-1 | Lock Washer, ¼” | |
| 10 | 2 | 75086874 | Screw, ¼”-20 x 5/8” | |
| 11 | 2 | 43020018 | Pin Retainer | |
| 12 | 1 | 75088064 | Washer, 5/8” ID x 1-5/16” OD x .095” (Not Used on MDL-30) |
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Contact SupportImportant Diagram Notice
These diagrams are for reference only.
- Due to unintended occasional data alignment issues, a page table may differ slightly from the original OEM PDF.
- Please verify details against the original PDF file.
- Contact our team anytime for part number confirmation.
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