Thieman Parts Diagrams
Thieman OEM parts diagram library
Browse interactive Thieman liftgate parts diagrams grouped by model type. Each link opens a searchable diagram and parts table—confirm your model and serial number before ordering.
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.
Have your liftgate serial number ready for faster assistance. Where to find it
Browse by model type
Thieman Tuck Under Diagrams
Thieman tuck-under diagrams including LRST and related models. Browse manuals by production period and match your serial number before ordering.
Coming soonLRST 40
Thieman Column Lift Diagrams
Column lift diagrams for TDR and TDRBG Thieman liftgates with vertical-track platform travel.
Coming soonTDR 44 55 66
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Coming soon
TDRBG 44
Thieman Rail Lift Diagrams
Rail lift diagrams for TVLR and related Thieman platforms used on warehouse and distribution routes.
Coming soonTVLR 125 16
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Coming soon
TVLR 20
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Coming soon
TVLR 30
Thieman Cantilever Diagrams
Cantilever diagrams for TWL, WT, and related Thieman models for palletized freight and wheeled loads.
Coming soonTWL 125
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Coming soon
WT 20 30 40
Thieman Pickup Lift Diagrams
Pickup lift diagrams for TT and related Thieman light-duty platforms.
Coming soonTT 15 20
Thieman Sideloader Diagrams
Sideloader diagrams for SL and related Thieman models.
Coming soonSL 15 20 EST 6
Thieman Other Diagrams
Additional Thieman diagram manuals including M-series warehouse and distribution models. Confirm serial number before ordering.
- Coming soon
M 16 20
- Coming soon
M 25 30 MDC 25
Not sure which Thieman manual matches your liftgate?
Send your serial number, model, and a photo of your ID tag. We will point you to the correct Thieman diagram before you order.
Thieman parts diagram FAQs
How do I find the right Thieman parts diagram?
Start with your liftgate serial number and ID tag, then match the model family and production period to a manual in the lists above. Our serial number guide shows where tags are located for Thieman and other OEM brands.
Why are Thieman manuals split by gate style and year?
Thieman revises designs over time—hydraulics, wiring, cylinders, and hardware can change between production runs. Manuals are grouped by gate style (tuck-under, rail, column, and so on) and build period so callouts match the liftgate on your truck.
Can I order replacement parts from these diagrams?
Yes. Each diagram links to orderable SKUs on LiftGateMe. Use the callout number in the parts table, add items to your cart, and include your serial number at checkout so we can verify fitment before shipping.
What if my serial number does not match any Thieman manual listed?
Email parts@liftgateme.com or call (774) 266-8892 with your serial number, model, and a photo of your ID tag. We will identify the correct Thieman diagram before you order.