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APPENDEX B
B.1 MILROYAL B PUMP FIELD INSTALLA-
TION (RETROFIT)
The Milroyal B e lectronic capacity control is avai l-
able in kit form for field retrofit to an existin g Mil-
royal B with manual s
troke adjustment . The
Milroyal B ECC retrofit consists of:
•
ECC & worm gear speed reducer assem-
bly
•
Lead screw with splined shaft
•
Adapter
•
Hardware and mounting screws
Please refer to instruction manual 3390007000 as
well as this manual. Refer to Section 6, “Parts List”,
Figure 20 as needed.
B.2 GENERAL
The following instructions pertain to pumps manu-
factured after 1 988 o nly. Pum ps manufactured
prior to 1988 can not be retrofitted with the ECC.
The simplest way to determine if your pump can be
fitted with an ECC is to examine the back end care-
fully. Pump casings manufactured after 1988 have
thicker pump hou sing walls an d thr ee mo unting
holes. These mounting holes are factory machine
spot faced, drilled and t apped, with hole plugs
installed.
If your pump has these mounting holes, it can be
retrofitted to ECC operation. The following supplies
will be needed to begin the retrofit process:
(1) ECC (see Table 4 for ECC models)
(1) ECC mounting kit # 20270, RTV, & Loctite
Sealant
B.2.1 Removal of Existing Pump Capacity
Adjustment
Refer to instruction manual 3390007000, Figures 9
& 10.
1. Drain oil fro m pu mp dr ive in pr eparation for
removal of existing micrometer capacity adjust-
ment.
2. Adjust micrometer knob to 0% setting.
3. Working from the bottom of the gear housing
(281-A), loosen the two set scr ews (4 05-AL)
and slide aside the two lead screw keys ( 211-
A). This will free up the lead screw (256-A).
4. Rotate the micrometer knob, turning it counter-
clockwise. Remo ve th e en tire kno b an d lea d
screw from the pump.
NOTE
Do not ch ange th e pu mp ca pacity setting
(0%) (i.e. move the crank (281-A)) during
this procedure.
5. If the per cent capacity plate (aluminum decal)
(253-C) is in goo d condition, you will not need
to change it. If it ne eds to be changed, use a
pocket kn ife to r emove th e percent c apacity
plate from the rear hub extension of the pump
housing. Press on a new one in the exact loca-
tion of the old decal.
6. Using a sma ll propane torch, hea t the th ree
mounting hole plugs. These plugs are held in
place with lo ctite, and require heat to r emove
them in on e piece . Af ter removing the th ree
plugs, degrease the mounting holes.
B.2.3 Installation
1. Apply 222 Loctite to the three mounting studs
(40, Figure 20), and install them in place of the
mounting hole plugs.
2. Install lead screw (60) with seal ( 70) in place.
Turn screw into pump until the groove or slot in
the end of the shaft lines up with the keys (211-
A, Figures 9 and 10, 3390007000). Set keys in
place and tighten set screws (405-AL). Loosen
the shaft 1/8 turn. The new shaft will now be at
zero setting.
3. Place the mounting bracket (3 50, Figure 20)
over the stud s and secur e in place with 3 /8
lockwashers (351) and 3/8 nuts (352).
4. Place the calibration ring (360) loosely over the
end of the indicator knob (370) with the gradu-
ations toward the pump. Slide the indicator
knob over the end of the lead screw and align
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