Veeder-Root SERIES 7886 Manual

T^ VEEDER-ROOT
INSTALLATION, OPERATION
AND SERVICE INSTRUCTIONS
SERIES 7886
HIGH-CAPACITY &
SERIES 7887
METER REGISTERS
Manual No. 251325 (REV. B)
Technical Manual
8-014
Issued: 12/95
Supersedes : 5/93
VEEDER-ROOT
Petroleum Products

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
TABLE OF CONTENTS
SECTION 1. INTRODUCTION
A. General 1
SECTION 2. SERIES 7887 DESCRIPTION
A. General 1
B. Specifications 2
SECTION 3. SERIES 7886 DESCRIPTION
A. General 3
B. Specifications 3
SECTION 4. PERIODIC INSPECTION
A. General 5
B. Disassembly Prior to Cleaning 5
C. Cleaning 5
D. Inspection 5
E. Lubrication 5
F. Troubleshooting 7
SECTION 5. DISASSEMBLY AND ASSEMBLY
A. General 8
B. Removal of Major Groups 8
C. Individual Parts Replacement 10
D. Installation of Major Groups 10
E. Final Checks and Adjustments 15
F. Operational Check 16
SECTION 6. DAMAGE CLAIMS AND WARRANTY
A. Damage Claims 16
B. Return Shipping 16
C. Warranty and Conditions 16

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
SECTION 1. INTRODUCTION
A. GENERAL. These instructions are for servicing the
Series 7886 High-Capacity and Series 7887 Meter Registers
designed and manufactured by the Veeder-Root Company,
6th Avenue at Burns Crossing. P.O. Box 1673, Altoona, PA
16603. Phone: [phone].
When a vertical bar | appears adjacent to text or illus
trations, information has been added or changed at the last
issue date.
Note: Consult Veeder-Root on any unusual application,
installation or possible modification of this basic
design.
Every Meter Register is thoroughly tested at the Veeder-Root
factory and by the meter manufacturer when installed on the
meter. However, like any precision mechanism, it requires
periodic care to ensure maximum service. This manual is for
use in areas where factory rebuilding facilities and adequate
exchange stocks are not readily accessible.
Where manufacturer's replacement stocks are available, it is
important that no attempt be made to repair any meter
register defective within the terms of the warranty as by
doing so, the warranty is void and the user is deprived of the
protection provided by the warranty. It is recommended
that, when possible, meter registers be replaced and the
defective unit returned to the meter manufacturer.
Note: See Section 6 for complete Damage Claims and
Warranty.
IMPORTANT!
The instructions, photographs and drawings in Sec
tions 4 and 5 are based on the Series 7887 Meter
Register. With the exception of an additional count
ing wheel, the Series 7886 High-Capacity Meter
Register is physically similar and the same proce
dures should be followed.
Figure 1. External View of Series 7887 Meter Register.
SECTION 2. SERIES 7887 DESCRIPTION
A. GENERAL.
1. Physical. The Series 7887 Meter Register, Figure 1, displays
a running account, final total and accumulated total of
the quantity of liquid product delivery. Contained in a4"x
10" diecast enclosure, individual delivery data is displayed
on five 3/4" high figures while totalizer information is
recorded on eight 1 /8" high figures. Reset of the Meter
Register is accomplished through a reset knob on the
right-hand side of the unit.
2. Operational. The Meter Register is operated by a drive
shaft connected to a group of gears on the gear plate
which converts the drive revolutions to the appropriate
ratio. The output bevel gear of the group drives a bevel
gear, Figure 5, which is connected to the drive shaft and
clutch assembly. In rotating, this shaft drives a gear on the
clutch assembly which in turn drives a gear on the right
(unit) wheel assembly. Revolutions are then accumulated
on the wheels. In addition, this rotating shaft drives the
bracket group connected to the accumulative totalizer
shaft, thus both displays are driven from the same source,
assuring accurate recording of information. During the
reset operation, the clutch is disconnected from the drive
shaft, a shutter moves into place covering the display
wheels and reset fingers engage heart-shaped cams on the
individual wheels to move them back to a zero position. In
addition, a set of anti-topping fingers engages the wheels
to prevent jamming. At the completion of reset, the display
wheels will read all zeros, and the shutter will rise to the
normal operating position. The clutch will engage the
drive shaft to transfer the information from the next
delivery. The totalizer wheels will be unaffected by this
reset operation, thus displaying an accurate measure of
the accumulated totals of many deliveries.
1

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
B. SPECIFICATIONS.
Specifications listed are standard unless otherwise noted.
Optional features are available at additional cost.
Speed: 250 rpm.
Torque: Average running torque at room temperature with
1:1 input: 4 oz-in. During display wheel transfer from all 9's
to all 0's, the instantaneous peak torque may reach 40
oz-in.
Operating Temperature Range: 40° to +71°C (-40° to
+ 160°F).
Number of Figures: Meter Register: 5. Accumulative
Totalizer: 8
Size of Figures: Meter Register: 0.750" high x 0.400" wide
(19.05 x 10.16 mm). Totalizer: 0.125" high x 0.078" wide
(3.175 x 1.98 mm).
Color of Figures: White on black, except right-hand totalizer
wheel which is black on white when recording tenths of
units, and white on black when recording whole units.
Style of Figures: Veeder-Root/Cornell for optimum read
ability.
Character Configuration: 0 to 9 (options available).
Reset: Single handle on register. Designed for one-handed
operation.
Mounting: Eight 1 /4 x 28 tapped holes with steel inserts on a
6.625" (168.28 mm) diameter. Special adaptors are
available for nearly all meters.
Construction: Cover: cast aluminum. Case and sub frame:
cast Zamak. Wheels, pinions, and clutch: acetal resin.
Gearing: 1:1 is standard. 1:1 through 42:1 are available.
Lubrication: Periodic.
OPTIONS
Nonreset Pulser: Meter Register with Series 1871 or 7671
Pulse Transmitter.
k
\
188.925mm
7.438"
Dia.
0.250-28 UNF 2B
8 holes equally spaced
Studs must not enter tapped holes
more than 7.938mm (0.312").
168.275mm
6.625"
Dia.
Dimension Identification
Mounting Dimensions
214.934mm
-8.462"-
130.429mm
5. 35"
15.88mm + 0.508
0.625" ±0.020
127.863mm
-" 5.034 H
173.126mm
— 6.816
290.525mm
—11.438" —
56.769mm
2.235"
54.965mm
2.164"
139.7mm
5.5OO"-*
3.175mm
0.125"
Figure 2. Mounting Dimensions — Series 7887 Meter Register.
2

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
Figure 3. External View of Series 7886 High-Capacity Meter Register.
SECTION 3. SERIES 7886 DESCRIPTION
A. GENERAL.
1. Physical. The Series 7886 High-Capacity Meter Register,
Figure 3, displays a running account, final total and
accumulated total of the quantity of liquid product
delivery. Contained in a 4" x 10" diecast enclosure,
individual delivery data is displayed on six 5/8" high
figures while totalizer information is recorded on eight
1/8" high figures. Reset of the Meter Register is accom
plished through a reset knob on the right-hand side of the
unit.
2. Operational. The Meter Register is operated by a drive
shaft connected to a group of gears on the gear plate
which converts the drive revolutions to the appropriate
ratio. The output bevel gear of the group drives a bevel
gear, Figure 5, which is connected to the drive shaft and
clutch assembly. In rotating, this shaft drives agear on the
clutch assembly which in turn drives a gear on the right
(unit) wheel assembly. Revolutions are then accumulated
on the wheels. In addition, this rotating shaft also drives
the bracket group connected to the accumulative totalizer
shaft, thus both displays are driven from the same source,
assuring accurate recording of information. During the
reset operation, the clutch is disconnected from the drive
shaft, a shutter moves into place covering the display
wheels and reset fingers engage heart-shaped cams on the
individual wheels to move them back to a zero position. In
addition, a set of anti-topping fingers engages the wheels
to prevent jamming. At the completion of reset, the display
wheels will read all zeros, and the shutter will rise to the
normal operating position. The clutch will engage the
drive shaft to transfer the information from the next
delivery. The totalizer wheels will be unaffected by this
reset operation, thus displaying an accurate measure of
the accumulated totals of many deliveries.
B. SPECIFICATIONS.
Specifications listed are standard unless otherwise noted.
Optional features are available at additional cost.
Speed: 250 rpm.
Torque: Average running torque at room temperature with
1:1 input: 4 oz-in. During display wheel transfer from all 9's
to all 0's, the instantaneous peak torque may reach 40
oz-in.
Operating Temperature Range: -40° to +71°C (-40° to
+ 160°F).
Number of Figures: Meter Register: 6. Accumulative
Totalizer: 8
Size of Figures: Meter Register: 0.625" high x 0.300" wide
(15.87 x 7.62 mm). Totalizer: 0.125" high x 0.078" wide
(3.175x1.98 mm).
Color of Figures: White on black, except right-hand totalizer
wheel which is black on white when recording tenths of
units, and white on black when recording whole units.
Style of Figures: Veeder-Root/Cornell for optimum read
ability.
Character Configuration: 0 to 9 (options available).
Reset: Single handle on register. Designed for one-handed
operation.
Mounting: Eight 1/4 x 28 tapped holes with steel inserts on a
6.625" (168.28 mm) diameter. Special adaptors are
available for nearly all meters.
Construction: Cover: cast aluminum. Case and sub frame:
cast Zamak. Wheels, pinions, and clutch: acetal resin.
Gearing: 1:1 is standard. 1:1 through 42:1 are available.
Lubrication: Periodic.
OPTIONS
Nonreset Pulser: Meter Register with Series 1871 or 7671
Pulse Transmitter.

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
188.925mm
7.438"
Dia.
0.250-28 UNF 2B
8 holes equally spaced
Studs must not enter tapped holes
more than 7.938mm (0.312").
168.275mm
6.625"
Dia.
Mounting Dimensions
130.429mm
15.88mm ±0.508
0.625" +0.020
127.863mm
5.034 H
173.126mm
— 6.816
290.525mm
—11.438" —
56.769mm
2.235"
Dimension Identification
214.934mm
-8.462"-
54.965mm
2.164"
139.7mm
5.500"-*
3.175mm
0.125"
Figure 4. Mounting Dimensions — Series 7886 High-Capacity Meter Register.
Bracket-
Croup
Anli-Toppin.
Finger
Unit
Wheel
Shut tor
Detent Spring
lutch Spring
Reset Spring
Figure 5. Internal View of Series 7887 Meter Register (Series 7886 High-Capacity Meter Register is similar).
4

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
SECTION 4. PERIODIC INSPECTION
(For Series 7886 High-Capacity
and Series 7887 Meter Registers)
A. GENERAL. The Meter Register is fully lubricated and
properly adjusted at manufacture. However, periodic clean
ing and lubrication are required.
Judgement of the intervals at which the meter register
requires such service must necessarily be left to the individual
user due to varying conditions of service. Under normal
conditions, this will be at least once a year, or after each 2-1/2
million units of measure delivered, whichever comes first.
B. DISASSEMBLY PRIOR TO CLEANING. Remove the
meter register from its housing as follows:
1. Remove the bolts securing the cover (if present) to the top
of the housing. These bolts are hex head and are located at
the four corners of the bottom of the housing. Remove the
cover.
2. Remove the three button-head bolts securing the meter
register to the housing. Remove the meter register.
3. Remove the screws securing the gear plate to the bottom
of the housing. Remove the gear plate.
C. CLEANING.
CAUTION: DO NOT USE A WIRE BRUSH.
1. Wipe bezel crystal with a clean lint-free rag.
2. If the wheel faces are dirty, gently clean with a clean
lint-free rag dipped in mild soapy water.
3. Clean the gears on the base plate by flushing or with a
brush dipped in solvent. Blow dry with compressed air.
4. Clean housing by dipping, flushing or brushing with
solvent. Blow dry with compressed air.
D. INSPECTION. A periodic inspection of the entire meter
register, housing and gear plate is required to make sure that
they function properly, parts are in place, and no binding or
excessive side-to-side motion of shafts occurs. A checklist on
such procedures follows:
1. Check the following shafts for perceptible side-to-side
motion.
Note: Remove the meter register from the housing before
checking shaft freedom.
a. Wheel Shaft
b. Anti-Topping Finger Group Shaft
c. Reset Finger Group Shaft
d. Clutch Group Shaft
e. Pinion Shaft
2. Temporarily install the base plate and meter register in
the housing and check for proper engagement and
freedom of movement of:
a. All gears on gear plate.
b. Output bevel gear on gear plate with the bevel drive
gear on drive shaft.
c. 57 tooth gear on clutch assembly with gear on right
wheel assembly.
d. Gear drive shaft with gear train that operates the
totalizer, and gear connecting the drive train to the
totalizer.
3. Rotate drive shaft by hand to see that unit operates freely
and then reset, checking for proper reset and shutter
action. Adjust pointer after reset as required.
4. Check all screws, retaining rings and groove pins to see
that they are tight and seated properly.
E. LUBRICATION.
I. Recommended Lubricants
Note: Chemlube and VTschem products are manufactured
by Ultrachem Inc.,
1400 N. Walnut St., P.O. Box 2053
Wilmington, DE 19899
Oil: Chemlube 201 or equivalent with a temperature range of
-65°F to +275°F (-54°C to +135°C).
Grease: Vischem 352 or equivalent with a temperature range
of -65°F to +300°F (-54°C to +149°C).
Note: All lubricants used in the register must be of a type
which remains fluid over the full temperature range
to which the register will be subjected. Also, they
should not oxidize or dry out leaving a gummy or
perceptible residue.
If the Chemlube 201 oil lubricant is not available, a substitute
with equivalent properties may be used. To assist field
personnel in obtaining suitable lubricants for the meter
register and ticket printers, the following list showing equi
valent lubricants has been prepared:
OIL
AEROSHELL FLUID
REGENT SPINTEX OIL
GARGOYLE ARCTIC OIL
CASTROL HYSPIN
ANDEROL
AEROSHELL
ESSO BEACON
ANDEROL
2. Points to Lubricate
GREASE
NO. 3
60
LIGHT
40
401D
14
325
795
Oil: All points indicated as "Oil" on Figure 6 should be
lubricated with oil as described above. This includes all
shafts, studs, and bosses on which a moving part bears.
Grease: Grease should be applied to all points indicated as
"Grease" on Figure 6. This includes gears and the no-back
ratchet and pinion.
Note: The oil and grease should be applied with a small
brush to make certain that all areas will be properly
lubricated. In this manner, the amount of lubricant
being used will be more easily controlled.

iM Installation, Operation and Service Manual
JJ Series 7886 High-Capacity & 7887 Meter Registers
s/s/s////////////////// //////. 7 '///
SECTION Y-Y
WITH BEZEL REMOVED
W
Grease
Grease Grease
Gre?se Y^ /Oil
Oil Oil
CLUTCH SHAFT VIEW
Oil
Oil Oil
ANTI-TOPPING FINGER SHAFT VIEW
Grease
Oil
VIEW V-V
PARTIAL VIEW Z-Z
Grease
Oil
Grease
SECTION W-W
Oil'
PINION SHAFT VIEW
Oil
11
Oil ^Grease
Oil
Oil
RESET FINGER SHAFT VIEW
Oil
"Grease
OH
P
Grease
Grease 5 Places "
WHEEL SHAFT VIEW
Figure 6. Lubrication Points.

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
F. TROUBLESHOOTING. Table 1 is used to assist in
locating problems and making repairs and corrections. In
some problems, similar defects can be produced by several
causes of an entirely different nature. Cause of the trouble
must be determined and the correction made.
Table 1. Troubleshooting

Installation, Operation and Service Manual
Series 7886 High-Capacity & 7887 Meter Registers
SECTION 5. DISASSEMBLY AND ASSEMBLY
(For Series 7886 High-Capacity
and Series 7887 Meter Registers)
A. GENERAL. When disassembling the meter register, be
extremely careful not to lose or intermix any of the washers
found on the shafts. By doing so, potential problems with
end-play and backlash adjustments will be greatly lessened.
When removing retaining rings or other parts from shafts, do
not hold the shaft with any tool that might gouge or create
burrs on the shaft.
B. REMOVAL OF MAJOR GROUPS. Instructions for
removal of all shaft groups are provided.
1. If present, remove the retaining ring securing the reset
idler gear to the reset idler gear shaft.
2. Remove retaining rings and washers securing the pinion,
reset, anti-topping and clutch shafts to the right-hand
side plate (Figure 7). Remove screws and lockwasher
securing the totalizer group and rear mounting bar from
right-hand side plate.
3. Remove side plate.
CAUTION: DO NOT LOSE OR INTERMIX WASHERS FROM
EACH SHAFT.
Note: Remove only those shaft groups necessary to gain
access to parts being replaced.
^\
Accumulative
Totalizer Group
Retaining Screw
Pinion
Shaft
Stop Shaft
Anti-Topping
Finger Shaft
Clutch Shaft
Rear Mounting
Bar Retaining
Screw
Reset Shaft
Figure 7. Right-Hand Side Plate.
Figure 8. Left-Hand Side Plate.
8