Thieman SL 15EST 6 / SL 20EST 6 Liftgate Parts Diagrams
Thieman SL 15EST 6 / SL 20EST 6 liftgate parts lookup
Use this Thieman SL 15EST 6 / SL 20EST 6 liftgate parts diagram page to identify OEM components, review part callouts, and verify replacement liftgate 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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DECAL MAINTENANCE - INSPECTION AND LOCATION OF DECALS
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 4671050 | Warning Decal-off center | ||
| 2 | 4650150 | Fast Idle Decal | ||
| 3 | 4609 | Danger Decal-No Riding | ||
| 4 | 4608 | Operating Decal | ||
| 5 | 4650070 | Capacity Decal-1500# | ||
| 5 | 4650100 | Capacity Decal-2000# | ||
| 6 | 4604 | Warning Decal-Keep Hands Clear | ||
| 7 | 4605 | Handle Decal | ||
| 8 | 4614 | Wiring Decal | ||
| 9 | 4650530 | Urgent Warning | ||
| 10 | 4620 | Warning Decal-High Pressure |
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
i
PUMP ASSEMBLY
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 4404 | EST Pump Asm-incl 2 to 9 | |
| 1 | 1 | 4483 | EST Pump (With thermal switch) | |
| 2 | 1 | 4421420 | Pump bracket | |
| 3 | 1 | 4420410 | Breather Cap | |
| 4 | 1 | 4423520 | Motor 8111 (4404 PUMP) | |
| 4 | 1 | 4484 | Motor 8045-I (4483 PUMP) | |
| 5 | 1 | 4468 | Solenoid | |
| 6 | 2 | 4452 | Solenoid Coil only | |
| 7 | 1 | 4445 | Solenoid Valve Asm (lower) | |
| 8 | 1 | 4438 | Solenoid Valve Asm (raise) | |
| 9 | 1 | 4457 | Reservoir Ø4.50 x 10 | |
| 10 | 2 | 4951-015 | Hose 51.00 | |
| 11 | 2 | 4931-002 | Restrictor MJ-MAORB 90° | |
| 12 | 1 | 4318-002 | Battery Cable #2x2' | |
| 13 | 4 | 5781008 | Retaining ring | |
| 14 | 2 | 5009 | Pin | |
| 15 | 2 | 31478 | Cylinder 3 x 6 | |
| 16 | 1 | 4300030 | Battery cable #2 x 25' | |
| 17 | 1 | 4350 | Cable lug | |
| 18 | 4 | 5701260 | Cable retainer | |
| 19 | 5 | 8180126 | Screw .38-16 x 1.50 | |
| 20 | 10 | 8106-010 | Internal Tooth Lockwasher .38 | |
| 21 | 5 | 8120377 | Nut .38 | |
| 22 | 4 | 8120388 | Flatwasher .38 | |
| 23 | 1 | 4318-002 | Ground Cable #2 x 2' | |
| 24 | 1 | 31445 | Toggle Switch Asm | |
| 25 | 2 | 4951-013 | Hose 84.00 | |
| 26 | 2 | 4935 | “F” Fitting | |
| 27 | 2 | 5702371 | Spring pin | |
| 28 | 2 | 5024 | Pin | |
| 29 | 1 | 4319-002 | Heat Shrink | |
| 30 | 2 | 8111-005 | Screw #10 x .75 | |
| 31 | 1 | 8104-006 | Screw .31 x 1 | |
| 32 | 1 | 4422860 | Pushbutton Control | |
| 33 | 1 | 31057 | Pump Mounting Bracket | |
| 34 | 1 | 43076 | Low Voltage Thermal Switch | |
| 35 | 1 | 4301770 | Circuit Breaker 150A | |
| 36 | 1 | 5704 | Cover | |
| 37 | 1 | 5700100 | Strap | |
| 38 | 2 | 4930-001 | MJ-MAORB 90° | |
| 39 | 1 | 43048 | Diode Asm. | |
| 40 | 1 | 27244 | LVTS Mounting Bracket | |
| 41 | 2 | 8111-002 | Screw #10 x .75 | |
| 42 | 4 | 8107-013 | Flatwasher #10 | |
| 43 | 2 | 8106-007 | Lockwasher #10 | |
| 44 | 2 | 8103-010 | Nut #10 | |
| 45 | 1 | 43077 | LVTS Harness |
TRUNNION, LIFT ARM, & IDLER ARM ASM-10”
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 31046 | Trunnion asm (48 wide) | |
| 1 | 1 | 31610 | Trunnion asm (60 wide) | |
| 2 | 1 | 31603 | Lift arm asm (48 wide) | |
| 2 | 1 | 31605 | Lift arm asm (60 wide) | |
| 3 | 2 | 5770 | Hydraulic Damper | |
| 4 | 4 | 8104-012 | SS Screw .31-18x1.00 | |
| 5 | 4 | 8103-013 | SS Locknut .31 (nylon ins) | |
| 6 | 4 | 8107-004 | SS Flatwasher .31 | |
| 7 | 2 | 31059 | Idler arm | |
| 8 | 1 | 3110-002 | Strap weld RH | |
| 9 | 1 | 3110-001 | Strap weld LH | |
| 10 | 2 | 5019 | Adjustment rod | |
| 11 | 2 | 31374 | Clevis LH thread | |
| 12 | 2 | 31373 | Clevis RH thread | |
| 13 | 2 | 5101120 | Spring | |
| 14 | 2 | 5507-001 | Bronze Bushing | |
| 15 | 2 | 31606 | Chain Asm | |
| 16 | 4 | 5708-001 | Spring pin | |
| 17 | 16 | 5781008 | Retaining ring | |
| 18 | 2 | 4103 | Chain Link | |
| 19 | 2 | 4101-019 | Chain-Four Links | |
| 20 | 2 | 31595 | Spring Link Weld | |
| 21 | 2 | 9413534 | Locknut .38 | |
| 22 | 2 | 5793002 | Screw .38 x 1.25 | |
| 23 | 4 | 8107-008 | Flatwasher 1.00 | |
| 24 | 6 | 8271291 | Zerk | |
| 25 | 1 | 31284-001 | Leveling strap LH | |
| 26 | 1 | 31284-002 | Leveling strap RH | |
| 27 | 2 | 5009 | Pin | |
| 28 | 2 | 5024 | Pin | |
| 29 | 4 | 8121222 | Cotter Pin | |
| 30 | 2 | 5018 | Pin | |
| 31 | 8 | 5504-001 | Bushing | |
| 32 | 12 | 5504-005 | Bushing | |
| 33 | 2 | 8107-010 | Flatwasher 1.00 | |
| 34 | 2 | 5702371 | Spring pin | |
| 35 | 2 | 5017 | Pin | |
| 36 | 4 | 8120396 | Flatwasher .50 | |
| 37 | 4 | 4220240 | Insert | |
| 38 | 4 | 8181635 | Screw .38-24 x .75 | |
| 39 | 2 | 2037000 | 4 x 6 x .38 angle |
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
TRUNNION, LIFT ARM, & IDLER ARM ASM-6”
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 31046 | Trunnion asm (48 wide) | |
| 1 | 1 | 31610 | Trunnion asm (60 wide) | |
| 2 | 1 | 31599 | Lift arm asm (48 wide) | |
| 2 | 1 | 31607 | Lift arm asm (60 wide) | |
| 3 | 2 | 5770 | Hydraulic damper | |
| 4 | 4 | 8104-012 | SS Screw .31-18x1.00 | |
| 5 | 4 | 8103-013 | SS Locknut .31 (nylon ins) | |
| 6 | 4 | 8107-004 | SS Flatwasher .31 | |
| 7 | 2 | 31058 | Idler arm | |
| 8 | 1 | 31062-002 | Strap weld RH | |
| 9 | 1 | 31062-001 | Strap weld LH | |
| 10 | 2 | 5019 | Adjustment rod | |
| 11 | 2 | 31374 | Clevis LH thread | |
| 12 | 2 | 31373 | Clevis RH thread | |
| 13 | 2 | 5101120 | Spring | |
| 14 | 2 | 5507-001 | Bronze Bushing | |
| 15 | 2 | 31606 | Chain Asm | |
| 16 | 4 | 5708-001 | Spring pin | |
| 17 | 16 | 5781008 | Retaining ring | |
| 18 | 2 | 4103 | Chain Link | |
| 19 | 2 | 4101-019 | Chain-Four Link | |
| 20 | 2 | 31595 | Spring Link Weld | |
| 21 | 2 | 9413534 | Locknut .38 | |
| 22 | 2 | 5793002 | Screw .38 x 1.25 | |
| 23 | 4 | 8107-008 | Flatwasher 1.00 | |
| 24 | 6 | 8271291 | Zerk | |
| 25 | 1 | 31284-001 | Leveling strap LH | |
| 26 | 1 | 31284-002 | Leveling strap RH | |
| 27 | 2 | 5009 | Pin | |
| 28 | 2 | 5024 | Pin | |
| 29 | 4 | 8121222 | Cotter Pin | |
| 30 | 4 | 8181635 | Screw .38-24 x .75 | |
| 31 | 2 | 2037000 | 4 x 6 x .38 angle | |
| 32 | 12 | 5504-005 | Bushing | |
| 33 | 8 | 5504-001 | Bushing | |
| 34 | 2 | 5018 | Pin | |
| 35 | 2 | 5017 | Pin | |
| 36 | 4 | 8107-010 | Flatwasher 1.00 | |
| 37 | 2 | 5702371 | Spring pin | |
| 38 | 4 | 8120396 | Flatwasher .50 | |
| 39 | 4 | 4220240 | Insert |
PLATFORM ASSEMBLY
| Item | Qty | Part Number | Description | Actions |
|---|---|---|---|---|
| 1 | 1 | 3406 | Platform Asm-incl 2 to 5 48 | |
| 1 | 1 | 3453 | Platform Asm-incl 2 to 5 60 | |
| 2 | 1 | 31023 | Plat. main (48 wide) | |
| 2 | 1 | 31609 | Plat. main (60 wide) | |
| 3 | 1 | 31024 | Platform extension (48 wide) | |
| 3 | 1 | 31608 | Platform extension (60 wide) | |
| 4 | 2 | 5056 | Pin | |
| 5 | 4 | 5781001 | Retaining ring | |
| 6 | 1 | 31020-002 | Platform hinge RH | |
| 7 | 1 | 31020-001 | Platform hinge LH | |
| 8 | 1 | 8120382 | Lockwasher .38 | |
| 9 | 12 | 8108-001 | Screw .38-16 x 1.75 SS | |
| 10 | 2 | 8107-011 | Flatwasher .62 |
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Phone
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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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