Pump Assembly; Assembly Tips; Assembly - DARLEY 2BE6.5H Operator's Manual

Assembly Tips:

•
Before working on the unit, make sure the sparkplug wire is disconnected from the sparkplug, and the
engine ignition switch is turned "OFF."
•
Do not apply Loctite products to any part more than five minutes before installing that part.
•
Loctite products set up more quickly on brass parts; allow as little time as possible between
application of Loctite and installation of part.
•
When pressing one part into another, the parts must be started square with each other and pressed
straight together to avoid galling.
•
In step seven, the bottom two 5/16" NC hex head cap screws (12) used to attach the pump casing (21)
to the inboard head (9) must be placed in their hole in the inboard head before installing the head to
the engine (5).
•
Using an impact wrench with a 1" socket to install the impeller (18) onto the engine shaft will
normally eliminate the need for the flywheel wrench X4891. A slight nudge with an impact wrench
is all that is required to seat the impeller. Do not exceed 30 ft-lb torque when installing the impeller.
•
During assembly it may also be helpful to refer to drawing DBC0503. Keep in mind that the
reference numbers listed in the text refer to drawing DBC0502.

Assembly

1. [Note: If not replacing the seal ring (24), go to step 3.]
Apply Loctite 603 to the outer surface of the seal ring (24).
2. Using X4927 as an arbor, press the seal ring (24) into the pump casing (21) until it is seated.
3. [Note: If not replacing the seal sleeve (25), go to step 5.]
Apply Loctite 603 to the outside diameter of the impeller hub (18).
4. Using press arbor X4872, press the seal sleeve (25) onto the impeller hub (18) with the beveled end
of sleeve away from the impeller. Use extreme care not to scratch or otherwise damage the seal
sleeve surface.
5. Install the mechanical lip seal (23). Refer to drawing 1201004 for in-depth instructions on how to do
this without damaging the seal.
Note: If the inboard head (9) is still installed on the engine (5), the lip seal can be
installed by using X4926 and a hammer to gently tap the seal into place.
6. Apply Loctite 243 to the threads of four stainless steel 5/16 UNC socket head cap screws (27).
7. Using the four stainless steel 5/16 UNC socket head cap screws (27), and four new stainless steel
sealing washers (32); (See note below) install the inboard head (9) to the engine (5). The rubber
sealing face of the sealing washers goes against the inboard head. Torque the 5/16 fasteners to 100
in-lb.
Note: The bottom two 5/16" NC hex head cap screws (12) used for attaching the pump
casing (21) to the inboard head must be placed into location in the inboard head
before installing the head to the engine (5).
8. Apply a light coating of marine grade grease to the entire engine shaft, except for the threaded
portion. DO NOT put grease on the threaded portion of the shaft; the threads must be clean and dry.
Prepared by: TED
Approved by: MCR
© W.S. Darley & Co.

Pump Assembly

Refer to Drawing DBC0502
24
Rev. #: 13
15May2006
1200569.doc