Vestil HDC-450 Series User manual

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 1 of 26
HDC-450 Series Manually-Propelled Hydraulic Drum Carriers Instruction Manual
Receiving instructions:
After delivery, remove the packaging from the product. Inspect the product closely to determine whether it
sustained damage during transport. If damage is discovered, immediately record a complete description of the
damage on the bill of lading. If the product is undamaged, discard the packaging.
Note:
The end-user is solely responsible for confirming that product design complies with all laws, regulations, codes,
and mandatory standards applied where the product is used.
Vestil Manufacturing Corp.
2999 North Wayne Street, P.O. Box 507, Angola, IN 46703
Telephone: [phone] -or- Toll Free [phone]
Fax: [phone]
Web: www.vestilmfg.com e-mail: [email protected]
Table of Contents
Signal Words………………………………………………………………………………............................................. 2
Hazards of Improper Use……...…………………………………………………………………………………..………2
Specifications (Dimensions, Net Weight, Capacity)……………………………………………………….……………3
HDC-450-60 Exploded Parts Diagram and Bill of Materials.……………….……………....…………...……..…….. 4 - 5
HDC-450-72 Exploded Parts Diagram and Bill of Materials……………………………………….…………..………5 - 6
HDC-450-84 Exploded Parts Diagram and Bill of Materials…………….…………..…..…………………..………...7 - 8
HDC-450-96 Exploded Parts Diagram and Bill of Materials………………….…………….……………..………….. 8 - 9
Hydraulic System - Foot Pump (Standard Units): Operation; Purging Air from the Pump;
Purging Air from the Cylinder……..……………………………………………………………………………………… 10
“Autoshifter” Foot Pump Exploded Parts Diagram and Bill of Materials………………...……………………………11 - 12
Hydraulic System Inspections and Maintenance……………….……………………………………………………… 12 – 13
Troubleshooting (foot pump)………………………………………………………………………………………………13
Electrically Powered Drum Carriers (Options HDC-DC and HDC-AC)……………………………………………….14
DC Modular Power Unit Exploded Parts Diagram and Bill of Materials……………………………………………... 14
DC Manifold Assembly Exploded Parts Diagram (Item 24 on p. 14)…..……………………………………………..15
12VDC Modular Power Unit Electrical Circuit Diagram……………………………………………………….………. 15
12VDC Modular Power Unit Layout……………………..………………………………………………………………. 16
AC Modular Power Unit Exploded Parts Diagram and Bill of Materials………………………………………………17
Electrical Box and Manifold Exploded Parts Diagrams (Items 2 and 12 on p. 17)…………………………………. 18
115VAC Modular Power Unit Electrical Circuit Diagram……………………………………………………………….18
115VAC Modular Power Unit Layout……………………………………………………………………………………. 19
Hydraulic Circuit Diagram (Powered Units; 01-127-010 Rev. C)…………………………………...………………... 19
Operating the Modular Power Unit (Raising & Lowering the Pivot Arm)……………..………………………………20
Using the Battery Charger (HDC-DC Units Only)………..…………………………………………………………….. 21
Lifting drums (standard and powered units)……………………………………………………………………………..22
Inspections & Maintenance……………………………………………………………................................................ 23
Troubleshooting guide (HDC-DC & HDC-AC)………………………………………………………………………….. 24 - 25
Labeling diagram……………………………………………………………………………………………..………..….. 25
Limited warranty…………………………………………………………………………………..……………………….. 26
*Unit shown is an HDC-450-60

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 2 of 26
Signal Words:
This manual uses SIGNAL WORDS to indicate the likelihood of personal injuries, as well as the probable
seriousness of those injuries, if the product is misused in the ways described. Other signal words call attention to
uses of the product likely cause property damage. The signal words used in this manual appear below along with
their definitions.
Identifies a hazardous situation which, if not avoided, WILL result in DEATH or SERIOUS
INJURY. Use of this signal word is limited to the most extreme situations.
Identifies a hazardous situation which, if not avoided, COULD result in DEATH or SERIOUS
INJURY.
Indicates a hazardous situation which, if not avoided, COULD result in MINOR or MODERATE
injury.
Identifies practices likely to result in product/property damage, such as operation that might
damage the product.
Hazards of Improper Use:
Vestil strives to identify all foreseeable hazards associated with the use of its products. However, material
handling is dangerous and no manual can address every conceivable risk. The most effective means for preventing
injury is the application of good judgment and common sense by the end-user.
Serious personal injuries might result from improper or careless use of this product.
Failure to read & understand the entire manual before using or servicing the product is a misuse of the
product.Read the manual to refresh your understanding of proper use and maintenance procedures.
DO NOT attempt to resolve any problem(s) with the product unless you are both authorized to do so and certain that
it will be safe to use afterwards.
DO NOT modify the product in any way UNLESS you first obtain written approval from Vestil. Unapproved
modifications might make the lift unsafe to use and automatically void the Limited Warranty (see p. 26).
DO NOT exceed the capacity of the drum handler. The product is labeled with its capacity (see Label 287 in
“Labeling diagram” on p. 25). Capacity is reduced to 500 pounds whenever a drum is half-full or less.
Inspect the product as directed in “Inspections and Maintenance” on p. 23. ONLY use the drum handler if it is in
normal condition. If repairs are necessary, only install manufacturer-approved replacement parts.
DO NOT change the setting of the pressure relief valve.
ALWAYS carefully watch the drum handler and drum during use.
DO NOT use this device UNLESS all product labels (see “Labeling Diagram”) are readable and undamaged AND all
machine guards are in place.
DO NOT ride on the drum handler or use it to move people.
ALWAYS lower the drum until it is entirely supported by the ground before leaving the unit unattended.
If part of the hydraulic system is damaged, AVOID contact with pressurized oil. High pressure oil easily punctures
skin which can cause injury, gangrene, or death.
Unload the drum handler before performing any service work on it.
The unit should always be labeled as shown in the Labeling Diagram on p. 25. Replace all labels that are damaged,
missing, or not easily readable.
DO NOT use the drum handler if it cannot securely clamp the drum you are trying to handle.
Only use this product on compacted, improved surfaces that are level and even. Do not traverse sloped terrain.
Proper use, maintenance, and storage are essential for this product to function properly.
oAlways use this product in accordance with the instructions in this manual.
oRelieve hydraulic pressure whenever the unit is not in use by fully lowering the carriage.
oKeep the product clean & dry. Lubricate moving parts at least once per month.
oONLY use manufacturer-approved replacement parts. Vestil is not responsible for issues or malfunctions that result
from the use of unapproved replacement parts.
oDo not use brake fluid or jack oils in the hydraulic system. If oil is needed, use an anti-wear hydraulic oil with a
viscosity grade of 150 SUS at 100°F, (ISO 32 cSt @ 40°C), or Dexron transmission fluid.
oContact the manufacturer for MSDS information

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Copyright 2017 Vestil Manufacturing Corp. Page 3 of 26
Specifications:
Dimensions and other specifications for each model appear in the table and diagrams.
Model A B C D E F G H Capacity
Net
weight
HDC-
450-60 9111/16” 4111/16” 493/16” 547/8” 453/4” 1091/4” 60” 773/8” 800 lb.
364 kg
533 lb.
243 kg
HDC-
450-72 9111/16” 4111/16” 493/16” 547/8” 453/4” 1091/4” 72” 921/2” 800 lb.
364 kg
535 lb.
243 kg
HDC-
450-84 1109/16” 4511/16” 533/16” 641/2” 533/4” 1247/8” 84” 10515/16”
800 lb.
364 kg
617 lb.
281 kg
HDC-
450-96 1109/16” 4511/16” 533/16” 641/2” 533/4” 1247/8” 96” 1183/4” 800 lb.
364 kg
743 lb.
338 kg
**NOTE: For all models, capacity is reduced to 500 pounds whenever a drum is half-full or less.

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 4 of 26
HDC-450-60 Exploded Parts Diagram (Bill of Materials on p. 5)

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 5 of 26
Item Part no. Description Qty. Item Part no. Description Qty.
1 09-514-043 Weldment, base with mast 1 18 36106 Hex nut, gr. A, zinc plated,
3
/8”-16 2
2 09-514-094 Weldment, pivot arm 1 19 16-145-031 Bolt with grease jerk,
1
/2”-13 x 3
1
/2” 2
3 09-538-005 Drum carriage/saddle assembly 1 20 33008 Flat washer, low carbon, USS,
zinc plated, 3/
8
” 2
4 09-516-004-
005 Subassembly, gear train, hand crank
1 21
09-516-004-
A3
Bushing, bronze, 37mm long,
20mm shaft 1
5 09-024-002 Cover, tube cap 1 22 11103 Hex bolt, gr. A, zinc plated,
3
/8”-16
x 3/
4
” 1
6 33-112-034 Clevis pin, zinc plated,
3
/4” x 3
3
/4” 3 23 09-516-079 Bracket, weldment, small door 1
7 45286 #11 hitch pin clip, 1/8” x 25/8” 3 24 38623
HHCS, metric, zinc plate, 8.8 M8 x
1.25 x 60mm 1
8 09-016-087 Bracket, spacer, drum saddle 1 25 40163 M8-1.25 Nylock nut 1
9 09-516-006 Weldment assembly, hinged door 1 26 09-002-004-A
3
/16” coil chain, 33” long 1
10 37030
1
/2”-13 Nylon insert lock nut 2 27 01-016-018 Pump, manual base plate 1
11 99-640-005 Hydraulic foot pump, autoshifter 1 28 11105 Hex bolt, gr. A, zinc plated,
3
/8”-16
x 1” 5
12 16-132-350 Floor lock 1 29 99-021-904-
001 Cylinder, hydraulic, 11/2”x18” 1
13 11119 Hex bolt, gr. A, zinc finish, 3/8”-16x4” 1 30 16-132-021 Swivel caster, PU-5/2-S 2
14 33622
Split lock washer, carbon steel,
medium zinc finish, 3/
8
” 2 31 99-612-001
Pin, caster receiver nut and bolt
combo. 2
15 37024
Nylon insert lock nut, gr. 2, zinc
finish, 3/
8
”-16 5 32 13-025-023 Handle grip, 11/8”I.D. red 2
16 14-025-001 Handle, crank,
5
/8” square end 1 33 16-132-216 Caster, wheel, GFN-8/2-W 2
17 11129 Hex bolt, gr. A, zinc finish,
3
/8”-16x8” 2 34 15-023-001 Reservoir, non-structural 1
HDC-450-60 Bill of Materials (Exploded Parts Diagram on p. 4)
HDC-450-72 Bill of Materials (Exploded Parts Diagram on p. 6)
Item Part no. Description Qty. Item Part no. Description Qty.
1 09-514-156 Weldment, base with mast 1 17 16-145-031 Bolt with grease zerk, 1/2”-13x31/2” 2
2 09-514-144 Weldment, pivot arm 1 18 33008
Flat washer, low carbon, USS, zinc
plated, 3/
8
” 1
3 09-538-005 Carriage/saddle drum weldment 1 19 09-516-004-
A3
Bushing, bronze, 37mm long,
20mm shaft 1
4 09-024-002 Cover, tube cap 1 20 38623 HHCS, metric, zinc plated, 8.8
M8x1.25x60mm 1
5 33-112-034 Clevis pin, zinc plated, 3/4” x 33/4” 3 21 40163 M8-1.25 Nylock nut 1
6 45286 #11 hitch pin clip,
1
/8” x 2
5
/8” 3 22 09-516-079 Bracket, weldment, small door 1
7 09-016-087 Bracket, spacer, cradle arm 1 23 09-002-004-A
3
/16” coil chain, 33” long 1
8 09-516-006 Weldment, swinging door 1 24 01-016-018 Pump, manual, base plate 1
9 37030
1/2”-13 Nylon insert lock nut 2 25 11105 Hex bolt, gr. A, zinc plated,
3
/8”-
16x1” 5
10 99-640-005
Hydraulic foot pump, autoshifter, 2-
speed (manual hydraulic units only) 1 26
99-021-904-
001 Cylinder, hydraulic, 11/2” x 18” 1
11 16-132-350 Floor lock 1 27 99-612-001 Nut & bolt combo, caster receiver 2
12 11119
Hex bolt, gr. A, zinc finish,
3
/8”-16 x
4” 1 28 16-132-021 Caster, swivel, PU-5/2-S 2
13 33622
Split lock washer, carbon steel,
medium zinc finish, 3/
8
” 2 29 13-025-023 Handle, grip, 11/8” I.D., red 2
14 37024
Nylon insert lock nut, gr. 2, zinc
finish, 3/
8
”-16 5 30 16-132-216 Caster, wheel, GFN-8/2-W 2
15 11129
Hex bolt, gr. A, zinc finish,
3
/8”-16 x
48” 2 31
09-516-004-
001
Subassembly, gear train, pull
chain 1
16 36106 Hex nut, gr. A, zinc plated,
3
/8”-16 2 32 15-023-001 Reservoir 1

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Copyright 2017 Vestil Manufacturing Corp. Page 6 of 26
HDC-450-72 Exploded Parts Diagram (Bill of Materials on p. 5)

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HDC-450-84 Exploded Parts Diagram (Bill of Materials on p. 8)

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Copyright 2017 Vestil Manufacturing Corp. Page 8 of 26
HDC-450-84 Exploded Parts Diagram (Exploded Parts Diagram on p. 7)
Item Part no. Description Qty. Item Part no. Description Qty.
1 09-514-097 Weldment, base with mast 1 17 16-145-031 Bolt with grease zerk,
1
/2”-13x3
1
/2” 2
2 09-514-095 Weldment, pivot arm 1 18 11129 Hex bolt, gr. A, zinc finish,
3
/8”-16 x
48” 2
3 09-538-005 Carriage/saddle drum weldment 1 19 36106 Hex nut, gr. A, zinc plated,
3
/8”-16 2
4 09-024-002 Cover, tube cap 1 20 33008 Flat washer, low carbon, USS, zinc
plated, 3/
8
” 1
5 45286 #11 hitch pin clip, 1/8” x 25/8” 3 21
09-516-004-
A3
Bushing, bronze, 37mm long, 20mm
shaft 1
6 09-016-087 Bracket, spacer, cradle arm 1 22 09-516-079 Bracket, weldment, small door 1
7 66173 Clevis pin,
3
/4” x 4
1
/2” 1 23 40163 M8-1.25 Nylock nut 1
8 09-516-006 Weldment, swinging door 1 24 38623 HHCS, metric, zinc plated, 8.8
M8x1.25x60mm 1
9 16-132-216 Caster, wheel, GFN-8/2-W 2 25 09-002-004-A
3
/16” coil chain, 33” long 1
10 37030
1/2”-13 Nylon insert lock nut 2 26 99-021-904-
001 Cylinder, hydraulic, 11/2” x 18” 1
11 99-640-005
Hydraulic foot pump, autoshifter, 2-
speed (manual hydraulic units only) 1 27 01-016-018 Pump, manual, base plate 1
12 16-132-350 Floor lock 1 28 11105 Hex bolt, gr. A, zinc plated,
3
/8”-
16x1” 5
13 11119 Hex bolt, gr. A, zinc finish,
3
/8”-16 x 4” 1 29 99-612-001 Nut & bolt combo, caster receiver 2
14 33622
Split lock washer, carbon steel,
medium zinc finish, 3/
8
” 2 30 16-132-021 Caster, swivel, PU-5/2-S 2
15 37024
Nylon insert lock nut, gr. 2, zinc finish,
3/
8
”-16 5 31 13-025-023 Handle, grip, 11/8” I.D., red 2
16 09-112-029 Pin, clevis 2 32 09-516-004-
001 Subassembly, gear train, pull chain 1
33 15-023-001 Reservoir 1
HDC-450-96 Exploded Parts Diagram (Exploded Parts Diagram on p. 9)
Item Part no. Description Qty. Item Part no. Description Qty.
1 09-514-157 Weldment, base with mast 1 17 11129 Hex bolt, gr. A, zinc finish,
3
/8”-16 x
48” 2
2 09-514-096 Weldment, pivot arm 1 18 36106 Hex nut, gr. A, zinc plated,
3
/8”-16 2
3 09-538-005 Carriage/saddle drum weldment 1 19 16-145-031 Bolt with grease zerk,
1
/2”-13x3
1
/2” 2
4 09-516-004-
001 Subassembly, gear train, pull chain 1 20 33008 Flat washer, low carbon, USS, zinc plated, 3/
8
” 1
5 09-024-002 Cover, tube cap 1 21 09-516-004-
A3
Bushing, bronze, 37mm long, 20mm
shaft 1
6 66173 Clevis pin,
3
/4” x 4
1
/2” 1 22 09-516-079 Bracket, weldment, small door 1
7 45286 #11 hitch pin clip, 1/8” x 25/8” 3 23 38623
HHCS, metric, zinc plated, 8.8
M8x1.25x60mm 1
8 09-016-087 Bracket, spacer, cradle arm 1 24 40163 M8-1.25 Nylock nut 1
9 09-516-006 Weldment, swinging door 1 25 09-002-004-A
3
/16” coil chain, 33” long 1
10 37030
1/2”-13 Nylon insert lock nut 2 26 99-021-904-
001 Cylinder, hydraulic, 11/2” x 18” 1
11 99-640-005
Hydraulic foot pump, autoshifter, 2-
speed (manual hydraulic units only) 1 27 01-016-018 Pump, manual, base plate 1
12 16-132-350 Floor lock 1 28 11105 Hex bolt, gr. A, zinc plated,
3
/8”-
16x1” 5
13 11119 Hex bolt, gr. A, zinc finish,
3
/8”-16 x 4” 1 29 99-612-001 Nut & bolt combo, caster receiver 2
14 33622
Split lock washer, carbon steel,
medium zinc finish, 3/
8
” 2 30 16-132-021 Caster, swivel, PU-5/2-S 2
15 37024
Nylon insert lock nut, gr. 2, zinc finish,
3/
8
”-16 5 31 13-025-023 Handle, grip, 11/8” I.D., red 2
16 09-112-029 Pin, clevis 2 32 16-132-216 Caster, wheel, GFN-8/2-W 2
33 15-023-001 Reservoir 1

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Copyright 2017 Vestil Manufacturing Corp. Page 9 of 26
HDC-450-96 Exploded Parts Diagram (Bill of Materials on p. 8)

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Copyright 2017 Vestil Manufacturing Corp. Page 10 of 26
Hydraulic System - Foot Pump:
Your new lift equipment includes a two-
speed pump that automatically shifts
between speeds based on the output
pressure of the hydraulic system. The pump
extends and retracts the hydraulic cylinder
(part number 99-021-904-001 in the
exploded parts drawings on pages 4, 6, 7, &
9), which raises or lowers the pivot arm and
drum saddle/carriage. Internal features of
the pump include primary pressure relief and
pressure compensated return flow
mechanisms, an integrated lowering valve,
and an auto-shifting valve assembly. The
pump also utilizes replaceable sleeve
bearings, valve components, and seals to
simplify maintenance requirements and
maximize service life.
Operation:
Pump speed automatically adjusts based on the output pressure of the hydraulic system. For example, when the
drum saddle is unloaded, pressure in the hydraulic system is low. Under these conditions, the pump operates in high
speed mode. Each stroke of the foot pedal pumps approximately 1.2 cubic inches of oil and the pivot arm (and drum)
rises rapidly. When a drum is connected to the drum saddle, hydraulic system pressure increases as the drum lifts off
of the ground. At pressures in the range of 800-1000 psi the pump automatically shifts to low speed mode. In low
speed mode, each stroke pumps approximately 0.44 cubic inches of oil. Less effort is required to move the pedal
when the pump is in low speed mode, by the cylinder extends much more slowly, i.e. the pedal has to be pumped
many more times to raise the arm.
The pivot arm rises with each stroke of the foot pedal. However, if the load weighs too much (weight exceeds the
capacity), then a pressure relief valve opens. When the relief valve is open, oil flows back into the reservoir rather than
to the cylinder. The arm will not rise until the weight of the load is either equal to or less than the capacity of the lifter.
Lower the pivot arm by pressing the release lever (see item no. 21 on pages 9 & 10). As the arm lowers, a
pressure compensated flow control valve ensures that it lowers at a controlled rate. Do not increase the pressure
relief setting more than necessary, i.e. be sure that you do not exceed the pressure rating of the components in the
hydraulic system.
Purging Air from the Pump:
Whether your pump is new or has been in use for a while, air probably is trapped inside the pump and must be
removed. When air is present in the hydraulic system, you might notice that the foot pedal feels spongy. To remove
air from the system:
1. Lower the pivot arm.
2. Remove the cover from the modular power unit and unscrew fill plug from the oil reservoir.
3. Disconnect the hydraulic hose from the port on the cylinder and insert the free end of the hose into the
reservoir.
4. Pump the foot pedal several times. Pockets of air will escape as oil flows from the hose and into the reservoir.
5. Once air is no longer present, reconnect the pump to the cylinder by reattaching the hydraulic hose to the
cylinder port. Check all of the hydraulic lines for oil leaks; then return the table to service.
6. Although air has been removed from the pump, air could still be trapped in the cylinder. The next procedure
explains how to remove air from the cylinder.
Purging air from the cylinder:
A bleeder screw is located at the top of the cylinder. The bleed screw includes a hose fitting to allow attachment of
a small diameter hose. By attaching a hose to the screw, any oil that escapes during the bleeding process can be
directed into a container for proper disposal. To bleed air from the cylinder:
1. Lower the pivot arm.
2. Pump the foot pedal once.
3. Carefully open the bleeder screw. The pressure in the system generated by pumping the pedal causes air (and
oil) to flow out of the bleeder screw. Pressure will drop as air and oil flow from the cylinder. To pressurize the system,
close the bleed screw and pump the pedal once. Open the bleeder screw again to allow more trapped air to escape.
4. Repeat step 3 until air is completely removed from the cylinder (i.e. only oil flows from the bleeder screw).
5. Check all of the hydraulic lines for oil leaks.
6. Return the unit to service.
1
1
/2in. x 18in.
displacement
cylinder with
internal
velocity fuse
Pressure compensated
flow control; 1GPM
Pressure
check valve
Adj.
pressure
relief valve
Pressure
check
valve Lowering valve
2-speed
foot pump
Hydraulic circuit diagram (foot pump)

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Detail view of items 9.1-9.3
“Autoshifter” Foot Pump Exploded Parts Diagram
[Bill of materials on next page]
9.1
9.2
9.3
Item Part no. Description Quantity
9.1 99-031-022 Release valve pin seal retainer 1
9.2 99-144-017 Seal, release valve 1
9.3 99-145-127 Star washer 1
Ports in pump body (“1” in diagram):
The auto-
shifter foot pump has four possible
circuit connections.
2 pressure ports: marked “P” and “FC/P”;
2 intake/return ports: marked “T” - one is
located on the rear and the other is located
on the right side of the pump body.
Including 2 pressure ports and 2
intake/return ports allows the circuit
configuration to be adapted to varied
applications. The unused pressure and
intake/return ports are each plugged with an
SAE #6 port plug.
Pump repair kit (part no. 99-136-013)
Part no. Description Qty.
99-144-017 Polypack,
1
/
8
” x
3
/
8
” x
1
/
8
” 1
99-145-127 Retaining ring, STPA (star washer) 1
99-031-067 D-wiper, 1
1
/
4
” x 1.625 x 0.187 1
PP-
12501250-
125B
Seal, 1.25 inner diameter x 0.125 cs
1
99-144-015 U-cup, twin lip rod,
3
/
4
” x 1.000 x 0.125 1
99-144-019 O-ring,
7
/
32
” x
11
/
32
” x
1
/
16
” 70D NBR 1
OR-904-N70 O-ring, #4 SAE port 3
OR-906-N70 O-ring, #6 SAE port 3
01-111-013 Bearing, self-lubricating,
1
/
2
” x
1
/
2
” 2

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Copyright 2017 Vestil Manufacturing Corp. Page 12 of 26
Autoshifter Foot Pump Bill of Materials:
Hydraulic System Inspections and Maintenance:
Before putting this drum carrier into service, create a written record of the appearance and operation of the foot
pump, cylinder, and hydraulic hoses. Use the foot pump to extend the cylinder and then retract it by pressing the
release lever. Include details in your record about the amount of effort necessary to move the foot pedal as well as
how the pump and cylinder look and sound during extension and retraction. This record establishes normal condition
of the pump and cylinder. During subsequent inspections, compare observations to the written record to determine
whether the pump and cylinder are in normal condition.
Unload the drum carriage and lower the pivot arm before inspecting the pump or performing maintenance on it.
(A) Before Each Use Check For Any of the Following Conditions. Do not return the unit to service unless it is in normal
operating condition.
Oil leaks from the pump, hoses, hose fittings, etc.
Pinched or chafed hoses
Item no. Part No. Description Quantity
1 99-039-001 Body, manual pump, 1.75/0.75 bore 1
2 99-041-001 Piston, pump, 1
1
/
4
” x
3
/
4
” 1
3 99-041-002 Piston, pump, unloader 1
4 99-110-007 Bearing, ball,
1
/
4
” 3
5 99-110-006 Bearing, ball,
3
/
8
” 3
6 99-153-038 Flow control, pressure compensated, 1.0 gal. 1
7 99-114-001 Washer, beveled spring washer 8
8 99-146-008 Spring, relief 1
9 99-653-005 Assembly, release valve packing 1
9.1 99-031-022 Accessory, hydraulic, relief valve pin seal retainer 1
9.2 99-144-017 Seal, release valve 1
9.3 99-145-127 Washer, star 1
10 99-031-066 Plug, SAE #6 port 3
11 99-112-009 Pin, release pin 1
12 99-016-018 Bracket, pivot plate 1
13 01-111-013 Bushing, polygon
1
/
2
” inner diameter x
1
/
2
” long 2
14 99-112-008 Pin, pivot 1
15 20-110-003 Cam roller with seal 1
16 99-031-067 Wiper, 1
1
/
4
” inner diameter x 1
1
/
2
” outer diameter x
3
/
16
” 1
17 99-144-018 Seal, 1
1
/
4
” x
1
/
8
” CS 1
18 99-031-068 U-cup,
3
/
4
” outer diameter x
1
/
8
” CS 1
19 25547 Socket head set screw, black oxide finish,
3
/
8
” – 16 x 2” 2
20 25537 SSS, CP, utility grade,
3
/
8
” – 16 x
3
/
8
” 2
21 99-040-001 Lever, release pedal 1
22 64133 Pin, spring pin,
3
/
16
” – 1” long 1
23 99-016-017 Bracket, pedal link 1
24 99-040-002 Lever, foot pedal, 2-speed, auto-shifter 1
25 99-116-005 Morb hollow hex plug, SAE 4 2
26 99-146-004 Spring, compression, inlet check 2
27 99-146-006 Spring, compression, retainer 2
28 99-146-005 Spring, compression, outlet check 2
29 99-146-009 Spring, compression, return piston 1
30 99-146-007 Spring, release ball 1
31 99-112-049 Pin, detent ring 1
32 36106 Hex nut, grade A, zinc plated,
3
/
8
” – 16 2
33 99-144-019 O-ring,
7
/
32
” inner diameter x
11
/
32
” outer diameter x
1
/
16
” CS 1
34 99-112-050 Pin, spring guide 1
35 99-153-070 Valve, relief 1
36 99-031-069 Cap, #6 JIC 1
37 11105 Hex bolt, grade A, zinc plated,
3
/
8
” – 16 x 1” 1
38 33622 Split lock washer, carbon steel, medium zinc finish,
3
/
8
” 3

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Copyright 2017 Vestil Manufacturing Corp. Page 13 of 26
Unusual noise or binding
(B) Monthly Inspections:
Determine the oil level. Oil should be 1" to 1-1/2" below the top of the reservoir/tank with the pivot arm fully
lowered. Add oil, if necessary.
Check for oil leaks. Resolve the issue as described in “Troubleshooting” section.
Check the hydraulic system for worn or damaged hoses. Replace damaged hoses as necessary.
Cycle the deck and listen for unusual noise. See "Troubleshooting".
(C) Yearly:
Change the oil at least once a year or sooner if it darkens, is gritty, or appears milky. Milky appearance indicates the
presence of water. Replace the oil with AW-32 hydraulic fluid or its equivalent.
Troubleshooting (Foot Pump):
Issue Explanation Remedy
1. Pivot arm does not rise
despite pumping pedal
a. Too much weight applied to the
saddle (load exceeds capacity).
b. Too little oil in hydraulic system
c. Pinched hydraulic hose
d. Relief valve pressure setting too low
a. Remove enough of load that weight of load
is within capacity of carrier
b. Add oil until level is within one inch of top
of reservoir
c. Correct as appropriate
d. Increase pressure setting as necessary,
but NEVER more than 3,000psi
2. A lot of force is required to
pump the pedal and the arm
does not rise or rises slowly
e. Debris under pressure relief valve
f. Debris under inlet check valve
e. Remove, disassemble, clean (with mineral
spirits or kerosene), reassemble and
reinstall pressure relief valve assemblies.
f. Remove, disassemble, clean (with mineral
spirits or kerosene), reassemble and
reinstall check valve assemblies.
3. Pivot arm rises only when
unloaded or pedal pumped
rapidly
OR
I can pump the pedal but
the arm does not move.
g. Pump is air locked
h. Debris on seat of inlet check valve
i. Pressure setting of relief valve
needs adjustment
j. Debris on seat of relief valve
g. Remove air from the pump (see “Purging
air from the pump,” p. 10).
h. Remove inlet check valve and clean
debris from valve seat (the bottom of the
cavity in pump body that valve fits into).
i. Increase pressure setting as necessary,
but NEVER more than 3,000psi.
j. Remove relief valve and clean debris from
valve seat in pump body.
4. Arm rises during the down
stroke of the pedal, but
lowers during the upstroke.
k. Outlet check valve stuck in open
position
k. Remove, disassemble, clean (with mineral
spirits or kerosene), reassemble and
reinstall outlet check valve assemblies.
5. Pivot arm rises and
maintains elevation, but
have to pump the pedal a
million times
l. Autoshifter valve stuck in
closed/deactivated position (piston
out).
l. Remove port plug from port marked “UL”
(on pump body); then remove piston.
Inspect piston and springs
6. Pivot arm rises very slowly m. Autoshifter valve stuck in open/
activated position (piston in)
m. Remove port plug from port marked “UL”
(on pump body); then remove piston.
Inspect piston and springs
7. Pump pedal feels spongy or
pivot arm rises in jerks
n. Oil level is low
o. Air present in pump and/or cylinders
n. Add oil until level is within 1in. of top of
reservoir.
o. Purge air by following “Purging air from
the pump” and “Purging air from the
cylinder” on p. 10.
8. Pivot arm lowers very
slowly
p. Flow control valve obstructed p. Remove valve and inspect for debris or
non-operating spool
9. Arm lowers too rapidly q
. Flow control valve obstructed or not
moving freely
q. Remove valve and inspect for debris or
non-operating spool
10. Pivot arm rises part way
and then stops
r. Air trapped in small pump chamber r. Perform “Purging air from the pump” on p.
10.

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 14 of 26
Electrically Powered Drum Carriers (units with option HDC-DC or HDC-AC):
A modular power unit (MPU) provides power to raise and lower the pivot arm.
Option HDC-DC utilizes a 12V battery with an onboard battery charger.
Option HDC-AC is an AC powered MPU’s that must be connected to an electrical outlet.
DC modular power unit exploded parts diagram and bill of materials
Item Part no. Description Quantity
1 99-016-933 Base bracket 1
2 21-034-008 Charger (Soniel) 1
3 01-033-024 24”, 18/3, 4-pin plug 1
4 37927 Tinnerman clip 4
5 99-023-001 Reservoir 1
6 99-034-013 Battery strap 1
7 24DC36 Battery 1
8 BV-48 Breather 1
9 15-533-013 Cable, battery, 23” black 1
10 15-533-014 Cable, battery, 23” red 1
11
23305
33688
33008
3
/8” – 16 x 1” utility grade bolt
3/8” high collar lock washer
3/
8
” flat washer
2
2
2
12 99-135-011 4”, 12VDC motor w/ tang dr. 1
13 15-022-004 12V start solenoid relay 1
14 HS64 Worm gear hose clamp 1
15 BG-12V Battery gauge 1
16 ZB2BZ009 Base, contact block 3
17 ZB2BE101 Contact block N.O. 3
18 ZB2BA2C
Operator, black, non-
illuminated 2
19 ZB2BG4C Key switch, 2-position 1
20 01-134-007 Legend, ON - OFF 1
21 091802JY Fiberglass cover 1
22 HS52 Clamp, worm gear 1
23 01-143-906 Pump 1
24 01-627-010
Manifold
assembly (exploded
view on p. 15) 1
25 29201
1
/4in. – 20 x 1
3
/4in. TPHMS
zinc-plated 2
26 29185
1
/4in. – 20 x 1in. TPHMS
zinc-plated 2
27 23255
33687
SHCS utility grade
High collar lock washer
4
4
28 152400-03 Molded cord 1
29 150CCTM.OEM Connector, charge 1
30 3MT ST3540 1in. hook and loop press 10”

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 15 of 26
12VDC modular power unit electrical circuit diagram
Limit switch or jumper
wire used where
applicable.
DC manifold assembly exploded parts diagram (item 24 on p.14)
Item Part no. Description Qty.
31 568-015-BN70 O-ring 1
32 568-011-BN70 O-ring 1
33 99-153-058 Valve, cartridge, normally closed 1
34 99-034-010 Coil with weather-tite plug 1
35 99-153-006 Valve, pressure relief 1
36 568-334-BN70 O-ring 1
37 99-531-005 Filter 1
38 99-153-038 Flow control, 1.0GPM 1
39 01-127-010 Manifold 1
40 6801-06-06-NWO MJ-MAORB 90 degree 1
41 99-153-011 Valve, check 1
NOTE: Overcurrent & short-circuit protection as well as system
disconnect must be provided.

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 16 of 26
12VDC modular power unit layout (part 2 of 2)
12VDC modular power unit layout (part 1 of 2)

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 17 of 26
AC modular power unit exploded parts diagram and bill of materials
Item Part no. Description Quantity
1 99-016-933 Base bracket 1
2 21-034-008 Electrical box (see FIG. 6B) 1
3 21-034-005 AC adaptor plug 1
4 37927 Tinnerman clip 4
5 99-023-001 Reservoir 1
6 Motor brace 1
7 23255
33687
5
/16” – 18 x 1” utility grade bolt
5/
16
” high collar lock washer
4
4
8 BV-48 Breather 1
9 29185
1
/4” – 20 x 1” TPHMS z-plated
screw 1
10 29201
1
/4” – 20 x 1
3
/4” TPHMS z-plated
screw 1
11
23305
33688
33008
3
/8” – 16 x 1” utility grade bolt
3/8” high collar lock washer
3/
8
” flat washer
2
2
2
12 01-627-010 Manifold (see FIG. 6C) 1
13 01-143-906 Pump 1
14 HS52 Worm gear hose clamp 1
15 091802JY Fiberglass cover 1
16 ZB2BZ009 Base, contact block 3
17 ZB2BE101 Contact block N.O. 3
18 ZB2BA2C
Operator, black, non-
illuminated 2
19 ZB2BG4C Key switch, 2-position 1
20 01-134-007 Legend, ON - OFF 1
21 1
22 HS52 Clamp, worm gear 1
23 01-143-906 Pump 1
24 01-627-010
Manifold assembly (exploded
view on p. 15) 1
25 29201
1
/4in. – 20 x 1
3
/4in. TPHMS
zinc-plated 2
26 29185
1
/4in. – 20 x 1in. TPHMS zinc-
plated 2
27 23255
33687
SHCS utility grade
High collar lock washer
4
4
28 152400-03 Molded cord 1
29 150CCTM.OEM Connector, charge 1
30 3MT ST3540 1in. hook and loop press 10”

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 18 of 26
Electrical box and manifold exploded parts diagrams (Items 2 and 12 on p. 17)
Item Part no. Description Qty.
1 71616 10 – 32 x 5/8” TSHMS screws 4
2 01-129-001 Transformer 1
3 132560 Motor contactor 1
4 27531
10 – 32 x
1
/4” PSHMS zinc-plated
screws 4
5 32028
8 – 18 x
1
/2” HWH TEK drill and
tap screws 4
6 TB-TRACK Aluminum din rail 3”
7 01-029-006
5/16” – 18 x 1” utility grade bolt 1
8 AB66JP 6” x 6” enclosure plate 1
9 C500
3
/8” (
1
/2” knockout) Romex 2-screw
NM clamp connector 4
10 01-127-010 LHL standard manifold, 3” boss 1
11 6801-06-06-NOW
3/8” – 16 x 1” utility grade bolt 2
12 99-153-011 Check valve 1
13 568-015-BN70 O-ring 1
14 568-011-BN70 O-ring 1
15 99-153-015 Normally closed cartridge valve 1
16 99-034-008 24VAC coil 1
17 99-153-006 Pressure relief valve 1
18 568-334-BN70 O-ring 1
19 99-531-005 Filter 1
20 99-153-038 Flow control, 1.0GPM 1
Manifold (item no. 12 on p. 17)
115VAC modular power unit electrical circuit diagram
Limit switch or jumper wire
used where applicable.
NOTE:
Overcurrent &
short-circuit
protection as well
as system
disconnect must
be provided.

Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 19 of 26
Hydraulic circuit diagram (Powered units; 01-127-010 Rev. C):
115VAC modular power unit layout
Cylinder


Rev. 9/25/2017 HDC-450, MANUAL
Copyright 2017 Vestil Manufacturing Corp. Page 20 of 26
Operation of Modular Power Unit (Raising & Lowering the Pivot Arm):
The drum carriage of electrically powered units is controlled by a
handheld controller as well as pushbuttons on the power unit housing.
To raise or lower the carriage, press the appropriately marked button.
When either button is released, the carriage will maintain position.
To raise the carriage, press the BLACK button on the handheld
controller (or the RAISE pushbutton on the housing). Pressing a button
starts the electric motor which turns the hydraulic pump. Oil from the
reservoir (inside the modular power unit) flows through a suction filter
and into the pump. The pump delivers pressurized oil to the hydraulic
cylinder through a check valve. The check valve allows oil to flow only in
one direction, i.e. to the cylinders, and prevents oil from flowing back
into the pump circuit when the pump stops. This traps oil in the cylinder
allowing the carriage to maintain elevation after the control button is
released.
If a load exceeds the capacity of the lifter, pressure will build up in
the circuit between the pump and the cylinders when the BLACK button
is pressed. This pressure forces the relief valve to unseat which in turn
allows oil to circulate back to the reservoir rather than pushing it into the
cylinder. This pressure relief mechanism prevents damage to the
hydraulic system.
To lower the carriage, press the WHITE button (or LOWER
pushbutton on the housing). This energizes the lowering solenoid valve
coil, which unseats the poppet valve and allows oil to return to the
reservoir from the cylinder through the pressure-compensated flow
control valve. Releasing the WHITE button de-energizes the solenoid
and closes the valve poppet. The poppet valve and check valve
together prevent oil from returning to the reservoir and cause the
cylinders to stop retracting. The carriage will maintain its position until
another command is received.
LOWERING SOLENOID VALVE
The lowering valve might occasionally need to be cleaned (see “Troubleshooting” on p. 24-25. Before working on
any part of the hydraulic system, always lower the carriage.
1. Remove the cover from the power unit.
2. Identify the lowering valve (port LL in the manifold) and remove it.
3. Use a thin tool to press the poppet in (from the bottom of the valve) and open the valve.
4. Repeat several times while immersing the valve in kerosene or mineral spirits.
5. Blow compressed air through the valve while holding it open as described in step 3.
6. Inspect the O-rings and the PTFE washer (polytetrafluoroethylene). If either component is damaged, replace it.
7. Reinstall the valve. The valve should be tightened to approximately 20 ft.-Ib. of torque.
VELOCITY FUSE
In the base of the cylinder is a brass velocity fuse with a stainless steel spring. If a fitting begins to leak or a hose is
punctured, the pivot arm descends rapidly. If the rate of descent exceeds the preset activation speed of the velocity
fuse, the fuse closes. While the fuse is shut oil cannot flow. The pivot arm remains stationary until pressure is
reestablished.
The velocity fuse can activate although no failure occurs (e.g. air gets into the hydraulic system). To be able to
raise or lower the pivot arm requires resetting the velocity fuse. To reset the fuse, jog the pump by pushing and
releasing the BLACK (or RAISE)button a few times. Immediately lower the carriage and disconnect the drum from
the saddle. Cycle the pivot all the way up and all the way down. Do this several times to purge air from the system.
BLEEDING AIR FROM THE HYDRAULIC CIRCUIT
If the pivot arm lowers very slowly (or not at all), air probably is trapped in the hydraulic circuit. To remove air from
the hydraulic circuit, follow these directions.
1. Lower the arm and disconnect the drum from the saddle.
2. A “bleeder” screw is located at the top of the cylinder. Loosen the bleeder screw by 1/4 to 1/2 turn to allow
trapped air to escape. Jog the motor to push air out of the system.
3. Only clear hydraulic fluid will flow from the bleeder screw opening when air has been completely removed. At
that point, reinstall the bleeder screw.
Handheld
controller
RAISE
button
LOWER
button
Modular power
unit (MPU)
Floor
lock
Pivot
arm
[Model HDC-305-60
shown]