The PowrTwin 4900 fluid section has its own part numbers for nearly everything: the 106-002A repacking set, 107-029 displacement rod, 107-946 pump cylinder and 569-021 outlet valve ball. Only the 143-019 retaining ring is shared with the larger pumps. Order from the 4900 diagram, and use 107-501 for the major kit.
Why the 4900 differs
Open the PowrTwin 4900 Fluid Section Parts page next to the 6900, 8900 or 12000 Plus pages and the difference is plain. The 6900 to 12000 pumps share a repacking kit (138-153A) and a pair of packing springs (142-004 and 142-003). The 4900 page has none of those. It lists a repacking set, springs and a spring retainer in the 106 series, and its rod, cylinder and valve parts carry 107, 569 and 762 numbers.
Titan's Plus manual describes the 4900 Plus layout with a sleeve and a sleeve spring, and the diagram lists a 106-116 sleeve spring (callout 8) that fits that description. We name the page by its site title, PowrTwin 4900, and we do not claim that every older 4900 build uses the same layout. Check the model plate before you order.
Packing parts
- 106-002A repacking set (callout 4). We do not list its contents, so confirm them before you buy.
- 106-005 upper packing spring (callout 5) and 106-016 lower packing spring (callout 9).
- 106-001 spring retainer (callout 7) and the 106-116 sleeve spring (callout 8).
- 106-015 PTFE O-ring (callout 3) and 106-014 O-ring (callout 15).
Titan's manuals say leather packings go in after soaking in oil, that the packing oil cup is topped half full with Piston Lube (314-480), and that routine pump service is due at about 1,000 hours or earlier if the top packing leaks. A paint film on the rod at the cup is a warning to act early.
Rod, cylinder and housings
The rod is the 107-029 displacement rod (callout 6) and the cylinder is the 107-946 pump cylinder (callout 14). The 107-003 connecting pin (callout 2) is also a 4900 number, while the 143-019 retaining ring (callout 1) is the one part this page shares with the larger pumps. The page also lists the 107-055 outlet valve housing (13), 107-057 foot valve housing (21), 107-015A foot valve housing and a 0528299 jam nut (22).
Valves
4900 valve parts and the larger-pump part they are not
| Position | 4900 part (callout) | Not the same as |
|---|---|---|
| Outlet ball | 569-021 (10) | 0509710 on 6900 to 12000 pages |
| Outlet seat | 107-058 (11) | 236-012 |
| Foot valve ball | 138-340 (18) | 0509707 |
| Foot valve seat | 762-137 (19) | 0509623 |
| Seat O-ring | 762-058 (20) | 0509708 |
| Foot valve cage | 107-056 (17) | 236-141 |
The right-hand column is for contrast only. Do not substitute those parts on a 4900.
The troubleshooting table in Titan's manual applies to the family. Delivery on the upstroke alone points at the lower foot valve ball, and delivery on the downstroke alone points at the upper ball or a worn lower packing. A seat worn on one side can be flipped to its unused side.
Kits and complete section
The 4900 diagram lists the 107-501 major fluid section service kit and the 107-005 complete fluid section. It also lists the 107-016 outlet valve assembly. We have not confirmed what is inside the 107-501, so ask our parts team. The complete section replaces the whole pump rather than parts, and it makes sense if rod and cylinder are both worn.
Do not cross-order
Start at the 4900 page
Use the 4900 fluid section diagram, not the 6900 or 8900 page, even when a part looks the same.
Do not assume a cross-fit
We do not claim any 6900, 8900 or 12000 part fits a 4900, apart from the retaining ring the page itself shares.
Call for anything unclear
Phone (713) 931-0006 with the model and serial number before you order a kit.
PowrTwin 4900 fluid section parts most often ordered:
The full list with callouts.
The motor that strokes the rod.
The filter between pump and hose.
The Short Version
A 4900 pump is repacked from its own page: 106-002A with the 106-series springs, 107-029 and 107-946 for rod and cylinder, 569-021 and 138-340 for the balls. Keep that list apart from the 6900 to 12000 numbers.
Not sure it is a 4900 part?
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