The Impact 840 Main Assembly page lists 44 parts. The controls are the control panel assembly 805-237A, Digi-Trac display 805-401, potentiometer 0508579, knob 805-354 and power switch 9850936. The fuse is 800-929, the oiler plate is 805-254A, and the page also holds the covers, siphon parts and the fluid section and filter head assemblies.
Why the Main Assembly page matters
The Impact 840 Main Assembly page is the largest of the 840 diagrams. It shows the sprayer as a whole: the controls and electronics, the covers and the siphon, plus the fluid section assembly and the filter head that mount to the body. If you cannot tell which page a part lives on, start here. The detail pages for the fluid section, drive and siphon break those assemblies down further.
Everything below is what the page lists on the Impact 840 diagram. The 840I and 840IA fitment is a separate question, so confirm those units with our parts team.
Controls and display
Control parts on the 840 Main Assembly page
| Part | Number | Notes |
|---|---|---|
| Control panel assembly | 805-237A | The complete panel assembly |
| Control panel cover with label | 805-853 | Cover and label for the panel |
| Digi-Trac display | 805-401 | Listed on the original 840 page |
| Potentiometer | 0508579 | Listed with the control knob |
| Control knob | 805-354 | Also uses set screw 704-598 and a nut with seal, 700-176 |
| Power switch | 9850936 | Power switch for the sprayer |
| LED assembly | 0522007 | Listed on the page with the controls |
Titan describes DigiTrac as a diagnostics display with settable pressure readings and resettable counters. It is listed on the IntelliSync 840I, but the original 840 page also lists a Digi-Trac display, 805-401, so it is not an IntelliSync-only part. If your display is dead or damaged, buy 805-401 by part number and not by guessing from the model name.
Electrical protection
- Fuse 800-929, a 15A fuse, with fuse block 0522210.
- Surge protector 0551972.
- Electronic motor controller cover 805-462. The controller itself, 805-840, is on the 840 Drive Assembly page.
- Transducer assembly 800-437.
Oiler plate and fluid connections
The AutoOiler is the push button that Titan says delivers oil from the reservoir directly to the packings. On the 840 diagram its parts sit in the 805-254A face plate and oiler assembly. The same page lists the 805-269A filter head assembly and the 805-236A fluid section assembly, plus the connecting parts: the 0552585 airless hose (26 in. x 3/8), fitting 813-555 and elbow fitting 9885640.
Covers and body
- Motor shroud 805-433A, belly pan 805-431 and belly pan cover 805-490.
- Back cover handle 805-332 and front cover handle 805-333.
- Pail hook 805-467, with its screw 858-625.
- Grommet 805-439 and return tube 0558369.
To find the right cover, match the part name and number on the diagram and not the shape from memory. Several screws and washers on the page repeat across callouts, so check the callout number before you reorder a screw.
Siphon and inlet
The page lists siphon assembly 805-296A, siphon tube 451-241 and inlet screen 710-046. Titan's 640 and 1040 manuals name air leaks at the siphon tube or a clogged siphon tube or inlet screen among the reasons an Impact will not prime, so those are the parts to check when the pump runs but does not draw paint. The 840 low rider siphon page lists the same inlet screen.
Frequently ordered parts from the 840 Main Assembly page:
The Short Version
Use the 840 Main Assembly page when the part is electrical, a cover, the oiler plate or the siphon. Match the part name and number, and call (713) 931-0006 with your model and serial number if you are unsure whether your unit is an 840, 840I or 840IA.
Not sure which 840 part you need?
Call (713) 931-0006 with your model and serial number and our parts team will confirm the part before you order.
(713) 931-0006Order by Parts Diagram