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Tenney Company
www.tenneyco.com
Jensen Serial Numbers AFTER 480 Mixer DR-1106 450 Mixer DO-781
NOTE: Complete seal exchange can be aided by removal of all covers.
TOOLS REQUIRED
2" ADJUSTABLE WRENCH
½
OPEN ENDED WRENCH OR SOCKET
¾
OPEN ENDED WRENCH OR SOCKET
LARGE FLAT HEAD SCREWDRIVER
¼
Two
-20 3"-4" BOLTS
.
3
Perform Lock-Off by
A. Pulling the YOKE back to stop.
TANK PRODUCT MAY BLEED DURING THIS OPERATION.
B. Turn YOKE counter-clockwise until SHAFT stops
(Approximately 90º). Placing pin at 9 o'clock position.
Mixer will be LOCKED OFF at this point AND
CAN BE CONFIRMED BY OPENING THE AIR
RELEASE VALVE. (Pg 11.)
.
4
Drain RESERVOIR by removing the plug and open the
release VALVE HANDLE. A
.
5
Remove VENT PLUG in front of the Mixer Bulkhead.
This will accelerate draining the Reservoir tank. B
6.
Remove SHAFT BOLT
Remove SEAL DRIVE RING. (A solid pull by hand will generally be sufficient.)
Two 1/4-20 tapped holes are provided to aid in removal.
MECHANICAL SEAL can normally be reached and replaced at this point.
Two 1/4-20 holes have been drilled and tapped into MECHANICAL SEAL Body to aid in removal.
NOTE: Use caution to avoid damage of Lip Seal when removing MECHANICAL SEAL
7A
Extreme caution should be taken to not damage the Inner LIP-SEAL, failure will
NOTE
;
require replacement of LIP-SEAL.
Reverse steps after installation of new MECHANICAL SEAL.
WARNING: YOU MUST ALIGN SEAL DRIVE RING HOLE WITH SEAL DRIVE PIN.
PERFORM SYSTEM FLUSH OF SENTRY SYSTEM Pg. 11
If debris is unreachable continue with steps 8-12 SEAL CHAMBER CLEANING.
For Jensen Mixer Parts - Call 281-350-1200
TAKE NECESSARY STEPS TO CONTAIN PRODUCT
.
2
(Approximately 1 inch).
, YOKE, and KEY
¾
(
OPEN WRENCH )
1. If tank product is
noticed in one of
the TOP TWO sight
glasses follow the
steps below.
Remove YOKE COVER.
½
(
OPEN WRENCH)
Remove YOKE bolts.
¾
(
OPEN WRENCH )
Position YOKE with SEAL PIN
HOLE at 12 O'clock Position.
3.
4. 5.
A
10
2.
B.
A.
6.
.
B
S16BR –Rev5
Pg 1 of 2
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