PENTA DB30 User manual

14DBP-001
DB30, DB40, DB50, DB70
OWNERS MANUAL

14DBP-001 2
CONTENTS
Unloading Precautions (Inside front cover)
Warranty Registration Form (Inside front cover)
1. Introduction
Customer Reference Information …………………………… 3
Additional Warranty Information ……………………………. 3
Identification Plate …………………………………………… 3
Warranty Information ………………………………………… 4
Technical Data ………………………………………………. 4
2. Safety
General safety instructions …………………………………. 9
Precautions …………………………………………………… 9
Transport ……………………………………………………... 10
Tires …………………………………………………………… 11
3. Connection
Pre-Operation check ………………………………………… 12
Tractor Requirements ………………………………………. 12
General Connection ………………………………………… 13
Tow Bar Adjustments ……………………………………….. 14
4. Operation
Tail Gate ……………………………………………………… 15
Hitch ………………….………………………………………. 15
Loading / Common weights………………………………… 15
Unloading …………………………………………………….. 16
Head Gate & Grain Shoot ………………………………….. 17
Rear hitch …………………………………………………….. 17
Hydraulic Power Pack ………………………………………. 18
Air Brakes …………………………………………………….. 18
Steering axles ………………………………………………… 18
Silage extension …………………………………………….. 19
5. Maintenance
Greasing ……………………………………………………… 20
Supports ………………….………………………………………. 21
Suspension ……………………………………………………………… 22
6.
Parts Breakdown
Decals

14DBP-001 3
INTRODUCTION
Congratulations on the purchase of your new PENTA DUMP BOX. This equipment has
been designed and manufactured to exceed the needs of you the farmer. With proper
operation and preventative maintenance it will last for years.
The purpose of this manual is to assist you in operating and maintaining your DUMP
BOX. Keep this manual readily available for reference and be sure to pass it on to new
operators or owners. Contact Penta TMR Inc. or any of our dealers if you need
assistance or additional information.
GENERAL INFORMATION
Operator orientation: The directions left, right, front and rear as mentioned throughout the
manual are seen from the tractor driver’s seat, facing forward.
Some items in this manual may differ slightly from your dump box. Penta reserves the
right to make changes to the dump box and this manual without notice
If in any doubt regarding the aspect of the design or operation contact Penta or an
authorized dealer.
CUSTOMER REFERENCE INFORMATION
Penta Model Number: ________________________________
Penta Serial Number: ________________________________
Date Purchased: ____________________________________
Dealer Name: ______________________________________
Dealer Tel #.________________________________________
Penta TMR Incorporated. Tel: [phone] Fax: [phone]
IDENTIFICATION PLATE
The Serial number is required with all
orders for spare parts and technical
enquires. This is necessary for correct
delivery and service.
The Serial number is attached to the
front left side of the main frame

14DBP-001 4
WARRANTY INFORMATION
PENTA warrants against defects in
construction or materials for a period of
ONE year. We reserve the right to inspect
and decide weather material or construction
was faulty or weather abuse or accident
voids our guarantee.
Warranty service must be preformed by a
dealer or service center authorized by Penta.
The warranty registration form (fig. 1.0)
must be filled out by the dealer and signed
by both the dealer and customer at time of
delivery. Reference PENTA’s warranty
Guidelines & Stipulations on our website
www.pentatmr.com or
Email: [email protected]
Fig. 1.0
TECHNICAL DATA
DB30 DB40 DB50 DB70
Axles Tandem Tandem Tri-
Axle
Tandem Axle (Optional)
Quad-Axle -
Standard
Tri-Axle - Optional
Steering Axles N/A N/A 2 Steering , 1 Fixed (Tri-
Axle)
2 Steering, 2 fixed (Quad-
Axle)
Extension Height
32 inch (81.3cm) 32 inch (81.3cm) 32 inch (81.3cm) 32 inch (81.3cm)
Front Tilt
Extension Hydraulic Hydraulic Hydraulic Hydraulic
Tailgate Hydraulic Hydraulic Hydraulic Hydraulic
Tailgate Chute
Manual
Hydraulic (optional)
Manual
Hydraulic (optional)
Manual
Hydraulic (optional)
Manual
Hydraulic (optional)
Tires
BKT FL630 800/45R26.5
Michelin 800/45R26.5
(optional)
BKT FL630 800/45R26.5
Michelin 800/45R26.5
(optional)
BKT FL630 800/45R26.5
Michelin 800/45R26.5
(optional)
BKT FL630 800/45R26.5
Michelin 800/45R26.5
(optional)
Total Length 292 inch (742 cm) 336 inch (853 cm) 405 inch (1029 cm) 468 inch (1189 cm)
Total Height
(With Tires and 32
inch extension)
148 inch (376 cm) 148 inch (376 cm) 149 inch (376 cm) 150 inch (376 cm)
Outside Width
(With Tires) 126 inch (322.5 cm) 127 inch (322.5 cm) 128 inch (322.5 cm) 129 inch (322.5 cm)
Interior
Dimensions
(LxWxH)
17 ft x 10.5 ft x 7.3 ft
(5.18 m x 3.20 m x 2.23 m)
21 ft x 10.5 ft x 7.3 ft
(6.40 m x 3.20 m x 2.23 m)
26.6 ft x 10.5 ft x 7.3 ft
(8.11 m x 3.20m x 2.23m)
32.5 ft x 11.4 ft x 7.3 ft
(9.91 m x 3.47 m x 2.23m)
Tandem Axle
Weight Capacity
40,000 lbs ( 18,140kg) 40,000 lbs ( 18,140 kg) 40,000 lbs ( 18,140 kg) N/A
Tri-
Axle Weight
Capacity N/A N/A *60,000 lbs (27,200 kg) 60,000 lbs (27,200 kg)
Quad
-
Axle Weight
Capacity N/A N/A N/A 80,000 lbs (36,285 kg)
Volume 1050 cu.ft (30m³) 1400 cu.ft (40m³) 1850 cu.ft (52m³) 2475 cu.ft (70m³)
Hoist Oil Volume
5.55 US Gal (21 litres) 8.5 US Gal (32 litres) 12.698 US Gal (48 litres)
**26.4 US GAL (100 litres)
Recommended
Tractor H.P. 140 160 190 240
* Based on Hoist Cylinder Rating
** DB70 is equipped
with Oil reservoir and Pump

14DBP-001 5
TECHNICAL DATA
DB30

14DBP-001 6
TECHNICAL DATATECHNICAL DATA
DB40

14DBP-001 7
TECHNICAL DATATECHNICAL DATA
DB50

14DBP-001 8
TECHNICAL DATATECHNICAL DATA
DB70

14DBP-001 9
SAFETY
For your safety and to develop better understanding of your implement, thoroughly read
the operator’s manual before use.
In this manual the terms CAUTION, WARNING, DANGER are used to identify safety
messages. When you see this , be alert to the possibility of damage and hazards
that can result in personal injury or death.
DANGER indicates an extremely hazardous situation or action that will result in
serious injury or death.
WARNING indicates a hazardous situation or action that could result in serious injury
or death.
CAUTION indicates an unsafe situation or action that may result in personal injury
IMPORTANT indicates special instructions or procedures which, if not observed could
result in damage to equipment.
NOTE indicates helpful information
YOU are responsible for the SAFE operation and maintenance of your implement.
YOU must ensure that anyone who will be operating, maintaining, servicing, or working
around the implement is familiar with the operating, safety and maintenance procedures
and related safety information contained in this manual.
The most important safety device on the equipment is a YOU the SAFE operator.
Do not modify the equipment in any way. Unauthorized modifications may impair the
function and/or safety and could affect the life and warranty of the equipment.
Think SAFETY! Work SAFELY!
PRECAUTIONS
Place all controls in neutral, stop the engine, set park brake, remove ignition key, and wait
for all moving parts to come to a complete stop before servicing, repairing, or unplugging
machinery.
Before applying pressure to the hydraulic system, make sure all components are tight and
that all lines, hoses, and couplings are in good condition.
Do not operate when guards are missing or broken.
Clear the area of all bystanders, especially children, before starting.
Do not allow children to play on or around the machine.
Do not operate with leaks in the hydraulic system or lubrication system.
Relieve pressure from hydraulic circuit before servicing or disconnecting from tractor.

14DBP-001 10
TRANSPORT
Clean reflectors, slow moving vehicle signs, and lights before transporting.
Do not allow riders, on or in the implement.
Stay away from overhead power lines when loading. Electrocution can occur without
contact.
Use hazard flashers on tractor when transporting on roads, and follow all local laws.
Attach securely to the tractor using a retainer on the drawbar, and a safety chain.
Make sure you are in compliance with all local regulations regarding equipment on public
roadways and highways.
Make sure SMV (Slow Moving Vehicle) emblem and all the lights and reflectors required
by law are in place, clean, and can be seen clearly by overtaking and oncoming traffic.
Reduce speed on rough roads and surfaces.
Add extra lights or use pilot vehicle when transporting during times of limited visibility.
DANGER Never overload the dump box. Overloading the box is dangerous and can
cause extensive damage
CAUTION Reduce speed when turning or travelling across uneven ground
WARNING Avoid extending or transporting implement on side hills or steep inclines
Use extra caution when transporting on roadways
-Match speed to operating conditions.
-Stay away from ditches and riverbanks.
-Use caution and pay attention.
-Use front weights to promote stability.
-Start forward motion slowly and change speed gradually.
-Drive around ditches.
-Use caution when braking down a grade.
It is recommended and good practice to:
-Lock the steering axles in a straight forward and reverse motion.
-Unlock the steering while turning
**** It is the duty of the operator to ensure that the dump box is maintained and operated
in accordance with all local and national regulations

14DBP-001 11
TIRES
Failure to follow proper procedures when mounting a tire on a wheel or rim can cause an
explosion which may result in serious injury or death.
Do not attempt to mount a tire unless you have the proper equipment and are qualified to
do the job.
Have a qualified tire dealer or repair service perform required maintenance.
MODEL OPTIONS
BKT: 800/45R26.5 BKT FL-630 PLUS TL
MICHELIN: 800/45 R26.5 174D CARGOXBIB
REDUCE COMPACTION
Over Inflated tires cause excessive soil compaction with the formation of ruts (in damp
conditions).
THE SERVICE LIFE OF YOUR TIRES
The wrong pressure may have a serious effect on the life of your agricultural tires:
OVERINFLATION causes excessive spin in the fields. On hard, stony soil, it causes
premature wear. On the road, over inflation causes fast, irregular wear on the lugs –the
footprint is too small.
UNDERINFLATION causes irreversible damage to tire casings: risk of failure. It also
leads to excessive wear on roads: too much rolling resistance.
Make Size Pattern Overall Dia
Rolling
Circumference
65 km/h (40 mph) 50 km/h (30 mph) 40 km/h (25 mph) 25 km/h (15 mph) 10 km/h (6 mph)
2815 kg (6206 lbs) 3410 kg (7518 lbs) 3780 kg (8333 lbs) 4450 kg (9810 lbs) 5070 kg (11177 lbs) 1.2bar (17 psi)
3400 kg (7496 lbs) 4120 kg (9083 lbs) 4570 kg (10075 lbs) 5400 kg (11905 lbs) 6140 kg (13536 lbs) 1.6 bar (23 psi)
3955 kg (87196 lbs) 4785 kg (10549 lbs) 5310 kg (11706 lbs) 6250 kg (13778 lbs) 7120 kg (15697 lbs) 2.0 bar (29 psi)
4540 kg (10009 lbs) 5500 kg (12125 lbs) 6080 kg (13404 lbs) 7160 kg (15785 lbs) 8160kg (17990 lbs) 2.4 bar (35 psi)
5050 kg (11133 lbs) 6100 kg (13448 lbs) 6785 kg (14958 lbs) 7985 kg (17604 lbs) 9085 kg (20029 lbs) 2.8 bar (41 psi)
5630kg (12412 lbs) 6815 kg (15024 lbs) 7560 kg (16667 lbs) 8900 kg (19621 lbs) 10135 kg (22344 lbs) 3.2 bar (46 psi)
6165 kg (13591 lbs) 7465 kg (16457 lbs) 8280 kg (18254 lbs) 9745 kg (21484 lbs) 11100 kg (24471 lbs) 3.6 bar (52 psi)
6700 kg (14770 lbs) 8110 kg (17880 lbs) 9000 kg (19841 lbs) 10590 kg (23347 lbs) 12060 kg (26588 lbs) 4.0 bar (58 psi)
Make Size Pattern Overall Dia
Rolling
Circumference
65 km/h (40 mph) 50 km/h (30 mph) 40 km/h (25 mph) 25 km/h (15 mph) 10 km/h (6 mph)
3010 kg (6640 lbs) 3640 kg (8020 lbs) 4090 kg (9020 lbs) 4755 kg (10480 lbs) 5630 kg (12410 lbs) 1.2bar (17 psi)
3670 kg (8090 lbs) 4440 kg (9790 lbs) 4990 kg (11,000 lbs) 5800 kg (12790 lbs) 6755 kg (14890 lbs) 1.6 bar (23 psi)
4330 kg (9550 lbs) 5240 kg (11550 lbs) 5890 kg (12,990 lbs) 6845 kg (15090 lbs) 7875 kg (17360 lbs) 2.0 bar (29 psi)
4990 kg (11000 lbs) 6040 kg (13320 lbs) 6790 kg (14970 lbs) 7890 kg (17390 lbs) 9000 kg (19840 lbs) 2.4 bar (35 psi)
5420 kg (11950 lbs) 6560 kg (14460 lbs) 7370 kg (16250 lbs) 8565 kg (18880 lbs) 9765 kg (21530 lbs)] 2.8 bar (41 psi)
5845 kg (12890 lbs) 7075 kg (15600 lbs) 7650 kg (17530 lbs) 9240 kg (20370 lbs) 10530 kg (23210 lbs) 3.2 bar (46 psi)
6270 kg (13820 lbs) 7590 kg (16730 lbs) 8530 kg (18810 lbs) 9915 kg (21860 lbs) 11295 kg (24900 lbs) 3.6 bar (52 psi)
6700 kg (14770 lbs) 8110 kg (17880 lbs) 9110 kg (20080 lbs) 10590 kg (23350 lbs) 12060 kg (26590 lbs) 4.0 bar (58 psi)
1393mm
FL 630 Plus
800 / 45 R
26.5
BKT
Pressure
Pressure
4097mm
(161.3 inch)
1395mm
174D TL
Cargoxbib
800 / 45 R
26.5
MICHELIN
Load Capacity
Load Capacity
4277mm
(168.4 inch)

14DBP-001 12
Pre- Operation Check
Read and understand manual carefully
Check Tires and lugs….Torque on the wheel lugs, Tire pressure (See pg.11)
Check fasteners
Check Pivot points and pins
Check Hoses and hydraulic cylinders, fittings and couplers
Check Grease points and adequate amount of grease is applied
Check Connections of the hoses and electrics and insure no pinch points and installed
properly
Check hitch and draw bar connection insure they are level and that the weight is
distributed evenly
Check lights and slow-moving vehicle are clear of debris
Tractor Requirements
DB30 = 140Hp
DB40 = 160Hp
DB50 = 190Hp
DB70 = 240Hp

14DBP-001 13
Connection
Coupling to tow vehicle –Hitch
Reverse the towing vehicle until hitch is lined up with the eye
Raise the tow hitch and lock into raised position
WARNING : Ensure all personnel are clear of danger around the dump box
WARNING : Make sure the trailer is properly secure and attached before moving
WARNING : Never park the dump box with the tub in the raised position
WARNING : Park dump box on firm and level ground
Coupling Hydraulic Hoses
It is import to keep the hose connections clean.
Connect the hydraulic service line to the connection on the tractor
Uncoupling the tow vehicle - Hitch
Ensure the tipping body is lowered fully
Ensure the drawbar is in the tow position
Lower the trailer onto the drawbar
Decouple all hoses and connections
When disconnected pace in holder.
Steering Axle Connections
Some models are equipped with steering axles, for easier turning and maneuvering.
A dual hydraulic connection from the tractor is used for this.
When traveling forward the spool valve should be moved to retract cylinders this allows
the steering axle to follow the lead axle.
WARNING : When traveling in the reverse direction the spool valve should be moved to
the extend the cylinders. The trailer wheels will then stay in line and locked.
Electrical connection
Ensure Prongs are clean
Walk around and check that lights are working properly

14DBP-001 14
Connection
Adjustment before towing the trailer:
Adjust the drawbar and/or the hitch of the towing vehicle so that when towing the trailer body is slightly
raised at the front.
Hitching the trailer so that the chassis is parallel to the road surface is acceptable, however this may
cause additional wear to the trailer brakes and those of the Towing vehicle.
Hitching too low will cause unnecessary wear to the suspension and brake components of the front axle,
and reduce the braking efficiency. It can also cause additional loading to be placed on the Towing vehicle.

14DBP-001 15
OPERATION
Tail Gate
Rear tail gate is operated hydraulically and adjusted from the tractor.
Hitch
Hitch is operated hydraulically (see connection)
LOADING
The BOX must not be loaded more then the capacity.
ALWAYS LOAD BY WEIGHT NOT VOLUME
Common weights are as follows:
Material Kg/M3 lb./ft3 Material Kg/M3 lb./ft3 Material Kg/M3 lb./ft3
Alfalfa 256 15.98 Granite, solid 2691 167.99 Silage, fresh pasture 590 36.83
Apples 641 40.02 Granite, broken 1650 103.01 Silage, maize 690 43.08
Ashes - wet 730-890 45.57-55.56 Grain - Maize 760 47.45 Slag, solid 2114 131.97
Ashes - dry 570-650 35.58-40.57 Grain - Barley 600 37.46 Slag, broken 1762 110.00
Asphalt, crushed 721 45.01 Grain - Millet 760-800
47.44
-
49.94
Slag, cushed 10mm 1185 73.98
Bark, wood refuse 240 14.98 Grain- Wheat 760-800
47.44
-
49.94
Slag, furn, granulated 961 59.99
Barley 609 38.02 Gravel, loose, dry 1522 95.02 Slate, solid 2691 167.99
Beans, soy 721 45.01 Gravel, with sand, natural 1922 119.99 Slate, broken
1290
-
1450
80.53
-
90.52
Beets 721 45.01 Gravel, dry 10 to 50mm 1682 105.00 Slate, pulverized 1362 85.03
Bran 256 15.98 Gravel, wet 10 to 50mm 2002 124.98 Soy beans, whole 753 47.01
Brewers grain 432 26.97 Grypsum, solid 2787 173.99 Stone, crushed 1602 100.01
Brick, common red 1922 119.99 Gypsum, broken
1290
-
1600
80.53
-
99.88
Stone, common 2515 157.01
Brick, fire clay 2403 150.01 Gypsum, crushed 1602 100.01 Sugarbeet pulp, dry 208 12.99
Brick, silica 2050 127.98 Lime, quick, lump 849 53.00 Sugarbeet pupl, wet 561 35.02
Buckwheat 657 41.02 Lime, quick, fine 1201 74.98 Sugarcane 272 16.98
Chalk, solid 2499 156.01 Limestone, broken 1554 97.01 Turf 400 24.97
Chalk, lumpy 1442 90.02 Limstone, pulverized 1394 87.02 Wheat 769 48.01
Chalk, fine 1121 69.98 Linseed, whole 753 47.01 Wheat, cracked 673 42.01
Cinders, furnace 913 57.00 Malt 336 20.98
Cinders, coal, ash 641 40.02 Manure 400 24.97
Clay, dry excavated 1089 67.98 Mud, packed 1906 118.99
Clay, wet excavated 1826 113.99 Mud, fluid 1730 108.00
Clay, dry lump 1073 66.99 Oats 432 26.97
Clay, fire 1362 85.03 Oats, rolled 304 18.98
Clay, wet lump 1602 100.01 Peat, dry 400 24.97
Clay, compacted 1746 109.00 Peat, moist 801 50.00
Clover seed 769 48.01 Peat, wet 1121 69.98
Concrete, Asphalt 2243 140.03 Potash 1281 79.97
Concrete, Gravel 2403 150.01 Potatoes, white 769 48.01
Corn, on the cob 721 45.01 Rice, hulled 753 47.01
Corn, chelled 721 45.01 Rice, rough 577 36.02
Earth, loam, dry, excavated 1249 77.97 705 44.01
Earth, moist, excavated 1442 90.02 Rye 1922 119.99
Earth, wet, dense 1602 100.01 Sand, wet 2082 129.98
Earth, dense 2002 124.98 Sand, wet, packed 1602 100.01
Earth, soft loose mud 1730 108.00 Sand, dry 1442 90.02
Earth, packed 1522 95.02 Sand, loose 1682 105.00
Earth, fullers, raw 673 42.01 Sand, rammed 1922 119.99
Fertilizer, acid phosphate 961 59.99 Sand, water filled 1650 103.01
Fish, meal 593 37.02 Sand with gravel, dry 2020 126.10
Flaxseed, whole 721 45.01 Sand with gravel, wet 2323 145.02
Flint - silica 1390 86.77 Sandstone, broken
1370
-
1450
85.52
-
90.52
Flour, wheat 593 37.02 Sawdust 210 13.11
Fullers earth - raw or burnt 570-730 35.58-45.56 Sewage, sludge 721 45.01
Garbage, household rubbish 481 30.03 Shale, solid 2675 166.99
Glass - broken or cullet
1290
-
1940
80.53
-
121.11
Shale, broken 1586 99.01

14DBP-001 16
OPERATION
Unloading
WARNING : Some models are equipped with steering axles, for easier turning and
maneuvering. When traveling in the reverse direction the spool valve should be moved to
the extend the cylinders. The trailer wheels will then stay in-line and locked.
Bring the towing machine to a stop.
Always position the towing vehicle and trailer in a straight ahead position wherever
possible.
Check for overhead obstructions especially when inside a building and near power lines.
Select the towing vehicles tipping control and raise the trailer body, control the speed to
suit the type of material being carried.
Slowly drive forward to ensure the loaded material is fully discharged.
Stop the towing vehicle and fully lower the body and close the tailgate before driving off.
Always lower the trailer body when leaving the machine.
Take care when tipping on gradients
Avoid tipping on unconsolidated ground
Be prepared for a change in stability as the center of mass changes as the load is ejected
from the trailer . Slow flowing or sticking loads can apply an upwards force to the
drawbar.
Never leave the trailer raised when disconnected from the towing vehicle

14DBP-001 17
OPERATION
Grain Chute & Front Gate
Grain Chute
Front Gate
The grain chute and front gate are operated hydraulically from controls located on the
draw bar and the rear chassis. (See hydraulic diagram on page. )
Rear Tow Bar
The rear tow bar is designed for light vehicle transport only.
Do not use when the box is loaded
Do not use tow bar for towing large equipment (i.e. dump trailers etc)
Steering Axles
Controlled Hydraulically
Must be in locked position during higher speeds strait away use,
Must be locked during reverse and unloading
Caution when turning on hills

14DBP-001 18
MAINTENANCE
WARNING Pressurized fluid can be extremely dangerous. Always relief hydraulic
pressure before preforming maintenance.
Always ensure that the machine has been properly greased
Grease Points: A - Cylinder Ball Joint (1x)
B - Cradle Bushings (Right & Left Side 2x)
C - Front Hitch (1X)
D - Tongue Pivot Point (Right & Left Side 2x)
E - Straight Axle (Right and Left Side 4x)
* - Steering Axle (Right & Left Side 10x) Steering Axle See Figure ___
F - Pivots
*

14DBP-001 19
Maintenance supports
The supports are designed to be used to keep the body raised if service is required
beneath the Tub.
Do not use safety bracket when box is loaded. Only use supports when box is empty.
Warning: A raised tub could suddenly drop and cause serious injury. Always use the
supports when working beneath the raised tub.
Installing the supports into the pockets while slowly lowering the tub
Removing the supports raise the tube until it is clear of the pockets. Pivot and pin in
storage location.
Warning: Never raise the tub in or around power cables or aerial obstructions

14DBP-001 20
Suspensions & Brakes
This section contains information that must be followed to ensure the correct functioning of the
axles and wheel brakes.
TIGHTENING WHEEL NUTS
Wheel lugs and nuts should be inspected: Before Use, After Refitting, & Every 6 Months
On wheels that have been replaced or refitted, the nuts can loosen after short periods of
operation. It is therefore necessary to check the tightness of the nuts after the first loaded run,
after refitting and again after approximately 1000 km (620 Miles) Every 6 months or 25,000km
(15,500miles).
To tighten the nuts, use a suitable wheel brace, and tighten them progressively and diagonally.
Check the torque using a Torque Wrench, DO NOT OVERTIGHTEN.
Torque setting should be 575Nm (424lbs/ft)
CHECKING THE HUBCAPS - Every 6 Months
Missing or damaged hubcaps must be replaced immediately to avoid dirt penetrating into the hub
which might result in damage to the bearings.
Check that the hub caps (1) are in place and in perfect condition.
For press fit hubcaps, check visually that they are fully home.
For hubcaps attached using screws,
fit a new gasket if necessary when the
hubcap is removed and retighten the screws regularly
CHECKING THE WHEEL BEARING PLAY
Every 6 Months
Wheel bearings are subject to wear: their lifetime depends on the operating conditions, the load,
the speed, the adjustment and lubrication, etc.
To check the wheel bearings:
- Use a suitable Jack and lift the wheel off the ground.
- Turn the wheel in both directions slowly to check for any rough points or friction.
- Turn the wheel at high speed to check for unusual noises, such as grating or knocking.
If the bearing is damaged or worn, the bearing and seals should all be replaced
Adjusting the wheel bearings
Lift the axle until the wheel is no longer resting on the ground.
Large wheels should be removed so that the play is easier to feel and to make it easier to adjust
the bearings. Remove the hubcap.
- Remove the cotter pin or hair-pin clip from the spindle.
- Tighten the castle nut (right-hand thread) to take up the internal play (the conical roller bearings
should then be firmly held between the hub seatings, the pressure ring, spindle and castle nut).
The rotation of the hub or wheel feels to be slightly stiff.
- Slacken the castle nut until there is no longer any friction between the castle nut and the outer
bearing and the hole for the pin is aligned with a notch in the castle nut.
- Tap the hub gently using a mallet to shake down the assembly.
- Check that the hub rotates more freely.
- Always err on the side of too free rather than too tight.
- When the hub has been adjusted, fit a new split cotter pin or re-fit the hair-pin clip.
- Refit the hubcap.
- When the wheel has been refitted, turn it slightly. It should come to rest with a slow rocking
movement due to the imbalance.