P180 KEYWAY PUMP ASSEMBLY
ITEM # DESCRIPTION QUANTITY PART NUMBER
1 Hose adapter 1 HA25
2 Pump Housing 1 181
3 Impeller 1 182
4 Pump Seal (Impeller seal complete containes 2 parts 4 & 5)1 WPS2
5 Pump Seal (Back plate) 1 WPS2
6 Mounting back plate bolts (5/16 x 1 1/2 Inch Flat head
Allen Head Bolt) 2 MB
7 Mounting back plate bolt counter sink (1” x 5/16
Flat head Allen Bolt 82 Degrees) 1 MBS
8 Engine Thin Mounting back plate 1 105E
9 Mounting back plate 1 105
10 Pump Housing Mounting bolts 4 HB
11 Pump Housing Mounting washers 4 HW
12 Pump Housing “O” Ring Gasket 1 104
13 Impeller allen button head Bolt 1 ABH
14 Impeller Key 1 IK
15 Impeller Attaching Bolt (Allen Head 5/16 x 1” Button head) 1 IAB
16 Flusher Adapter Cap 1 FAC
16 Flusher Adapter 1 FA
17 Compressor pulley (Not shown) 1 PU25WSB
18 Compressor V Belt (Not shown)(T80 BeltA24) (KAC BeltA27) 1
Flusher
Adapter
#14 & 15
Pump Housing #2
Hose Adapter #1
Impellar #3
Pump Seal Impellar #4
Impellar Key #12
Mounting Back Plate #5
Mounting Back Plate Bolts Long #6
Mounting Back Plate
Bolt Short #7
Mounting Back
Plate Bolt Short
#7
Impeller
allen head
Button
Bolt #13
MOUNT BACK PLATE
1. (Fig #2) First counter sink only one bolt hole on the engine (located at the 10 oclock position) About 1/8“
deep to accomodate (item #7) the short Mounting plate bolt. Using a standard 82 Degree x 1/2 inch to 3/4 “
diameter counter sink tool.
Figure 3
Figure 1
Counter sink hole
Pump
Housing
O Ring
Gasket
(Not
Shown
in above
diagram)
Figure
#2
#7
#6
#6
TOOLS REQUIRED: Short Shank &Standard Allen wrench 3/16ths. Standard 1/4 “Allen wrench, a 82 Degree x
1/2 inch to 3/4 “ diameter counter sink tool and a 1/2” combo wrench. A small tube of silicone adhesive.
Mounting engine
Thin Back Plate #8
Pump Housing
Bolts & Washers
#10 & #11
Figure #4
Figure #5
Figure #6
MOUNTING PUMP HOUSING
Place Pump Housing onto back plate and secure with 4 Pump Housing Mounting bolts and 4 Pump Housing
Mounting washers. Set bolt and washers loosely trhough back plate into Pump Housing. Make sure alignment is correct and tighten firmly equally. Be sure theat the housing conntains the ”O” Ring Washer.
Care must be taken not to overtighten as the threads in the housing threaded holes could become stripped.
4 bolts &
Washers
Allen Button
Head Bolt
ADDITIONAL SPECIAL SEAL INSTALLATION INSTRUCTIONS:
1. Before installing the mounting plate to the engine, the spring portion of the water pump seal must be installed. Place this portion of the seal into the center of the mounting plate, with the use of a light hammer
and or blunt instrument and or a seal setting tool. Tap the perimeter metal portion of the seal to set the seal
into position. Care must be taken to avoid contact with the carbon portion of the seal. A small amount of Silicone Rubber Cement placed in this section will insure a water tight seal. Insert the mounting bolts into the
mounting plate. Tighten the bolts evenly so as to prevent mis-alignment.
2. Fit "O" Ring gasket into "O" slot on the front face of the mounting plate, making sure that it is properly
seated. Place the ceramic portion of the water pump seal into the center of the impeller firmly, using the heal
of your hand to insure a proper fit. The ceramic surface of the seal must be facing outwards. Thread the impeller onto the engine shaft by turning it gently in a clockwise rotation, taking care to avoid damage to the
threads on the impeller.
3. Attach the outer housing to the mounting plate, using the 4 housing bolts and washers. Tighten the housing bolts evenly to ensure proper tension and alignment. Extreme care must be taken to prevent over tightening of the bolts. Too much torque will damage the threads in the outer housing.
Figure #7
2. Before mounting the back plate assembly (105 &105E) to engine, the BackPlate Pump Seal (#5) must be
pressed flush into center hole of the back of the Pump Back Plate (105) before attaching the Thin Engine
Back Plate (105E). Use silicone around edge of the hole to prevent leakage.
3. Also before mounting back plate assembly (105 &105E) to the engine place the compressor pulley if a
compressor is being used (14) over the shaft inside the back plate and tighen set screw also place compresor V belt (A24) onto the engine shaft pulley. (Ask size of V belt to match model of compressor being used)
4. Align mounting plate (105 & 105E) to engine and attach the 2 Mounting back plate long bolts (#6) lightly
snug to engine (see fig #3). You will need 1/4 inch allen head wrench.
5. Insert loosely Mounting back plate bolt Short Allen Head 5/16 x 1/2” Bolt) in the 10 oclock counter sunk
position and tighten with a short 3/16 inch Allen wrench. Then secure all three bolts.
MOUNTING IMPELLER
1. Insert Impeller Key (#12) into center of impeller as shown in figure #4.
2. Insert Impeller pump seal (#4) firmly into center of impeller as shown in figure #5.
3. Place impeller onto shaft and press firmly. Be sure to align key in keyway slot corectly. If not aliigned
correcly the impellar will not slide onto the shaft.
4. Insert Impeller Attaching (#13) Allen Button Head Bolt into threaded hole in the center of the drive shaft
and tighten firmly as shown in figure #6.
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