The 6900 Plus DI hydraulic system diagram lists 44 parts. The ones you handle are the 451-220 hydraulic filter, the 449-626 dipstick, the 449-212 tank plug, the 449-718A tank and the 448-243 pressure control knob. Titan's manuals require Coolflo and call for a fluid and filter change every twelve months.
What the diagram covers
The PowrTwin 6900 Plus DI Hydraulic system page is the oil side of the sprayer: the tank that holds the fluid, the hoses that carry it to and from the hydraulic motor, and the controls that set how hard the pump works. The diagram lists the 449-718A hydraulic tank (callout 25), the 0290770 tank cover (15) and the 449-605 tank gasket (16).
Hoses and valves on the 6900 Plus DI hydraulic system page
| Part | Callout | Listed as |
|---|---|---|
| 448-253 | 12 | Return hose |
| 420-251 | 33 | Case drain hose |
| 448-246 | 34 | Pressure hose assembly |
| 449-609A | 39 | Hydraulic by-pass |
| 941-555 | none shown | Ball valve |
| 449-752A | 4 | Hydraulic motor |
The page also lists elbows, a tube connector, hose clamp, ground lug and fasteners. Match by callout when you order a fitting.
Check items
Three parts on this page are touched far more often than the rest.
- 449-626 hydraulic fluid dipstick (callout 38). Titan's manuals say to check the level daily and keep it at the Full mark.
- 451-220 hydraulic filter (callout 36). The manuals call it the external hydraulic filter and say to change it with the fluid every twelve months.
- 449-212 tank plug with O-ring (callout 27), the fill point for fluid.
- 448-208 inlet screen (callout 22).
The manuals also say to add or change fluid only in a clean, dust-free area, so wipe around the plug before it comes out. After a change, run the sprayer at low pressure for at least 5 minutes to purge air. The fill quantity differs between Titan's manual summaries, so use the figure in your own manual rather than ours.
Controls
Working pressure is set at the 448-243 pressure control knob (callout 3). Its 313-755 decal is callout 1 and an 862-414 set screw is callout 2. Titan's manuals tell you to set pressure only as high as it takes to atomise the coating, because extra pressure wears tips and adds overspray, and the first step of the pressure relief procedure is turning the knob fully counterclockwise.
Fluid and service
Coolflo is the only hydraulic fluid Titan allows in a PowrTwin. The manuals call it mandatory and say not to use any other. Stock 430-361 by the gallon or 430-362 by the quart. The hydraulic pump is not field-serviceable, so if the system trouble is the pump, the manual's answer is to return it to Titan. The hydraulic motor diagram has the seals and valve parts instead.
Ordering
Confirm your model
Check the tag for 6900 Plus DI. Every PowrTwin model has its own hydraulic system diagram, with its own tank and hose numbers.
Open the 6900 Plus DI page
Use the hydraulic system link above and match the callout to your part. Part numbers in this guide are from that page.
Add consumables
Add Coolflo with the filter when it is time for the yearly change. Piston Lube (314-480) is for the packing oil cup and not for this system.
Call if unsure
Phone (713) 931-0006 with the model and serial number.
6900 Plus DI hydraulic system parts:
All 44 listed parts with callouts.
Seals, spool valve and trip parts.
Coolflo, Piston Lube and filters.
The Short Version
Dipstick daily, Coolflo only, and the filter and fluid together every twelve months: 449-626, 451-220 and 430-361 cover it. For anything else on the oil side, open the 6900 Plus DI hydraulic system page and match the callout.
Not sure which hydraulic 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