Elkhart Brass Detailed Bumper - Manual (Page 2)

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L L K K H H A A R R T T B B
R R A A S S S S M M
F F G G . . C C
O O . . , , I I
N N C C . .
1302 W EST B EARDSLEY A VENUE
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P.O. B OX 1127
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E LKHART IN 46515
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(574) 295-8330
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F AX (574) 293-9914
98434001 REV. REL
Bumper Replacement Instructions (Only SM-3 Series and 4000-01 Series)
Step 1: Complete Step 1 from the previous instruction set.
Step 2: Press the bumper onto the front of the tip by hand as
shown in Figure 3. In order to assist in this process a soap and
water solution should be applied to the inside of the bumper.
See Table 1 to determine which side of the tooth guard should be
facing up for the nozzle being repaired. Thread the tooth guard
and two hex nuts onto the threaded rod as shown in Figure 4.
Make sure the front of the nozzle is facing up as shown. Slide the
drive plate on the threaded rod until it rests on the top of the
bumper. Slide a thrust washer, thrust bearing, and another thrust
washer onto the end of the threaded rod until they rest on the drive
plate. Thread the remaining hex nut down onto the threaded rod
until it rests on the top thrust washer.
Step 3: Hold the bottom set of hex nuts stationary by using either
a vice or a wrench. Turn the top hex nut clockwise with a wrench
to force the bumper down until it is flush with the end of the
nozzle tip. Turn the top hex nut counter-clockwise until it is off
the threaded rod. Pull the bumper kit apart and re-assembled the
nozzle tip to the nozzle body.
Bumper Replacement Instructions With Arbor Press
or Drill Press
The installation of a new bumper can be alternatively done with
the aid of an Arbor Press or a Drill Press. With this type of
installation the threaded rod, hex nuts, thrust washers, and thrust
bearing are not required. The assembly is put together the same
as the previous instructions indicate minus these parts. The
assembly, shown in Figure 5, is then placed vertically into the
available press and force from the press is applied to the drive
plate. The force should be applied until the bumper becomes
flush with the tip of the nozzle. The soap and water solution
should still be applied to the inside of the bumper for
lubrication. After this is done the kit can be taken apart and the
tip re-assembled to the nozzle body. For the assembly of a
bumper to a nozzle tip from the SM-3 Series or 4000-01 Series
the configuration is the same as Figure 4 minus the threaded rod,
hex nuts, thrust washers, and thrust bearing.
Figure 3
Bumper Pressed On Tip By Hand
Figure 4
SM-3 or 4000-01 Series Assembly Configuration
Figure 5
Arbor Press or Drill Press Assembly