pronovost P-540 Product manual

Snowblowers
Models
No. C278R1 06/07
OPERATOR'S / PARTS
MANUAL
P-540 P-620
P-680 & P-680TRC P-720 & P-720TRC
P-720-74 P-720-80

Copyright © Les Machineries Pronovost Inc., 2007
All rights reserved.
Printed in Canada.

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TABLE OF CONTENTS
Section Item Page
1 Introduction ................................................................................................................ 5
2 Safety .......................................................................................................................... 6
General Safety .................................................................................................. 6
Safety in Operation ........................................................................................... 6
Safety with Maintenance .................................................................................. 7
Safety in Transport ........................................................................................... 7
Safety in Storage............................................................................................... 7
3 Decals .......................................................................................................................... 8
Safety Decals .................................................................................................... 8
Maintenance Decals........................................................................................ 10
4 Assembly.................................................................................................................... 12
General assembly............................................................................................ 12
5 Start-up...................................................................................................................... 13
Basic Start-up Procedures............................................................................... 13
6 Maintenance .............................................................................................................. 14
7 Storage ....................................................................................................................... 15
8 Trouble Shooting ...................................................................................................... 16
9 Specifications............................................................................................................. 18
10 Parts List ................................................................................................................... 19
Snowblowers P-540, P-620 ............................................................................ 19
Snowblowers P-680, P-720 ............................................................................ 22
Snowblowers P-680TRC, P-720TRC............................................................. 25
Snowblowers P-720-74, P-720-80.................................................................. 28
Manual Chute Kit MR-4864........................................................................... 31
Hydraulic Chute Kit: Motor SP-4864............................................................. 32
Semi-industrial Chute PSIG-5472 .................................................................. 33
Options ........................................................................................................... 34
P.T.O. Shaft 6408-E ....................................................................................... 36
P.T.O. Shaft 6248-EG..................................................................................... 37
P.T.O. Shaft 8114-EG..................................................................................... 38
Gear box 6451 ................................................................................................ 39
Gear Box 8251................................................................................................ 40
Cylinder 25TR04 ............................................................................................ 41
Hydraulic Motor MLH100, MLH125 & MLH250......................................... 42
11 Torque Chart ............................................................................................................ 43
12 Warranty ................................................................................................................... 44

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Figure 1
MODEL: "
SERIAL NO: "
DATE OF PURCHASE: "
INTRODUCTION
NOW take a moment to enter the model, serial
number and the date of purchase of your Snowblower
in the space provided.
When ordering parts from your Dealer, please refer to
these numbers for a fast and efficient service. Use
PRONOVOST parts for replacement.
The model and serial numbers are on the name plate
shown on Fig. 1.
Thank you for choosing PRONOVOST. We are
confident this equipment will meet your requirements
in terms of quality, performance and reliability.
This manual was prepared to assist you in the safe
operation of your new Snowblower. It contains
important information which will help you achieve
excellent returns with your Snowblower for years to
come.
Please read this manual completely before operating
your Snowblower and keep it for future reference.
Before starting the machine, you or any other person
who will be operating the Snowblower must
familiarize yourself with the safety recommendations
and the operating instructions. Please read carefully
and be sure to understand and follow all
recommendations and procedures.
In this manual, the right and left sides are identified as
shown on Figure 1.
If you require additional information on your
Snowblower, please contact your PRONOVOST
Dealer.
CONGRATULATIONS! 1
RightLeft

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WHEN YOU SEE THIS SYMBOL
SAFETY
ATTENTION!
BE ALERT
YOUR SAFETY IS INVOLVED
This symbol «SAFETY ALERT» is used in this manual and
on the safety decals on the Snowblower. It warns you of the
possibility of danger. Carefully read, understand and follow
all safety recommendations before operating the
Snowblower.
1) Careful operation is the best assurance against acci-
dents. Carefully read this manual and follow all
recommendations before operating your Snowblower.
It is the owner’s responsibility to make sure that anyone
who will operate the Snowblower will read this manual
before operating the equipment.
2) Familiarize yourself with all controls and always be
ready to stop the Snowblower quickly in case of
emergency.
3) Never let a child operate the Snowblower.
4) Do not modify the Snowblower. Any non authorized
modification may affect the efficiency and/or safety of
the equipment and will automatically void the warranty.
5) Never operate the Snowblower with defective parts or if
damaged in any way. Have it repaired before operating.
6) Make sure all fasteners are in place and properly
secured or tightened. Refer to torque chart on page 43.
7) Avoid wearing loose fitting clothing when working with
the Snowblower. These could get entangled in moving
parts of the equipment and cause accidents.
GENERAL SAFETY
8) Prolonged exposure to noise may hamper hearing.
Protect yourself by wearing adequate protection
devices.
9) Hydraulic fluids under pressure can damage your skin.
Do not use your hands to locate a leak.
10) Before the beginning of the snow season, inspect all
areas where the Snowblower will be used and remove
any object which may cause an accident and/or damage
the equipment.
11) Never operate your Snowblower in poor visibility or
without proper lighting conditions.
SAFETY IN OPERATION
1) Be sure there are no obstructions around the equipment
and that no one stands near the equipment when in
operation.
2) Do not operate an engine in a confined or non ventilated
area.
3) Do not perform any adjustments, cleaning, maintenance
or repairs with the engine running. The engine must be
stopped and the P.T.O. disengaged. Preferably remove
the key from the ignition.
4) Wear adequate clothing when working in cold or windy
conditions.
5) Adjust skid shoes for proper ground clearance of
scraper blade, especially in rough terrain or soft ground
conditions.
6) Before operating, make sure the P.T.O. is properly
installed and secured.
7) Before starting-up the Snowblower, make sure the auger
and drum areas are free of ice.
8) Put P.T.O. control in neutral position before starting
engine.
9) Keep hands, feet and clothing away from moving parts
of the Snowblower. Stay away from the discharge chute.
2

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SAFETY (cont'd)
10) Before unplugging the chute, always disengage the
P.T.O., stop the engine and relieve all hydraulic pressu-
res.
11) Do not operate in excessive inclined conditions. Be
careful when turning in slopes.
12) Never operate your Snowblower with missing guards or
without protective devices in place.
13) Do not operate your Snowblower near buildings,
windows or other vehicules without prior and proper
adjustment of the chute deflector.
14) Never aim discharge chute towards people or animals.
This may cause serious injuries.
15) Always reduce operating speed in slippery conditions.
16) Be careful when backing-up, make sure you have good
visibility.
17) Always be on the lookout for objects which may enter
theSnowblower.
18) If undue vibrations are felt, disengage the P.T.O., stop
the motor and look for the cause of the vibration.
Vibration is usually the indication of a problem.
19) At the end of the operation, disengage the P.T.O., lower
the Snowblower, put transmission in neutral, apply
parking brake, stop engine and remove the key from the
ignition.
SAFETY WITH MAINTENANCE
1) Perform the Snowblower maintenance according to
recommendations contained in this manual.
2) Stop engine and relieve all hydraulic pressures before
doing inspection, maintenance or repairs.
3) Never perform any work under the Snowblower while it
is supported only by the tractor's hydraulic system. It
must be completely supported by wooden blocks or
other safe means.
SAFETY IN TRANSPORT
1) On public roads, use proper safety lights and check
local regulations.
2) Be alert while driving on the road. Never carry
passengers.
3) Always disengage P.T.O. while moving from one area
of work to another.
4) It is recommended to use both brake pedals
simultaneously for better control.
5) The recommended road speed should be such as to
maintain full control over steering and braking.
6) Be careful while backing up, make sure you have good
visibility.
SAFETY IN STORAGE
1) Provide adequate supports to prevent any accidental
overturning of the Snowblower.
2) Do not let children play in the area where the
Snowblower is stored.
2

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DECALS
SAFETY DECALS
The safety decals are affixed wherever special safety
precautions are indicated. Locate them on the machine
and read them carefully. If a decal is damaged, lost or
illegible, install a new one. The following photos
indicate where each one must be installed.
Figure 2
Decal A Part no.: A102
Figure 4
Decal B Part no.: A101
Figure 3
Figure 5
3A
B
CB

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DECALS (cont'd)
Figure 6
Decal C Part no.: A107
Figure 7
Decal D Part no.: A103
Figure 8
Decal E in Fig. 9 is located directly on the P.T.O.
shaft. It is not visible when the safety shield is in
place. It must never be visible when you operate the
equipment.
D
Figure 9
Decal E Part no.: A108
3

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DECALS (cont'd)
Figure 15
Figure 13 Part no.: A 106
Figure 12 Part no.: A 105
Figure 14
Decal G Part no.: A104
MAINTENANCE DECALS
The maintenance decals indicate the points requiring
lubrication. Refer to maintenance section for more
details.
Figure 10
Decal F Part no.: A 109
Figure 11
3
F
G

- 11 -
Figure 17
Figure 16
Decal H Part no.: 190-06651
DECALS (cont'd)
H
3
Figure 19
Figure 18
Decal J Part no.: 190-07611
J

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ASSEMBLY
ASSEMBLY
1) The Snowblower is shipped partly assembled.
2) Install 3-point system according to the model of
your Snowblower. (See section 10 for parts
numbers). Use the holes most convenient to the
type of tractor used (Fig. 18).
3) Install P.T.O. shaft with the shear pin end onto the
Snowblower gear box (Fig. 19). Then attach
safety shield support chain as shown (Fig. 20).
WARNING: The telescoping tubes of the drive
shaft must never be allowed to bottom out while
maintaining a minimum overlap of 6 inches.
4) If you install a hydraulic cylinder on the chute
deflector, use model 25TR04 cylinder.
5) For the installation of the chute rotation
mechanism, please refer to page 28 through 29,
according to the type used.
Figure 18
Figure 19
Figure 20
4

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STARTING-UP
START-UP PROCEDURES
1) Check oil level in gearbox. Use SAE 80W90 gear
box oil.
2) Lubricate all points with a good quality
multipurpose grease.
3) Check chain take-up adjustment. The spring
maintaining the tension must be compressed to a
length between 3" and 3 1/4".
4) Verify for adequate tightness of all fastening
devices. Refer to torque chart on page 43.
5) Adjust skid shoes according to ground conditions
(Fig. 21).
6) Following the installation of the Snowblower on
the tractor, do not forget to lift the storage sup-
port (Fig. 22).
7) Make sure of a 540 RPM input to your
Snowblower.
8) Check impeller adjustment. The tip of the blades
should be approximately 1/8" to 3/16" from the
discharge wall of the drum. If necessary, adjust
with the take-up screws provided (Fig. 23).
Figure 21
Figure 22
Figure 23
5

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MAINTENANCE
1) Wipe off all grease fittings with a clean cloth
before adding grease in order to avoid injecting
dirt and sand.
2) Repair or replace damaged grease fittings.
3) Lubricate all grease fittings every 8 hours of
operation.
4) Oil drive chain every 8 hours of operation.
5) Lubricate P.T.O. shaft as indicated below:
Pull out the P.T.O. and lubricate between the two
tubes with low temperature grease. Drive line
tubes must slide easily even in cold weather. Clean
off old hardened grease and apply fresh grease as
needed.
6) Check oil level in gear box once a month. Adjust
to required oil level as per drawing in Parts List
section. Use SAE 80W90 oil.
7) Check tension of drive chain every 24 hours of
operation and adjust if necessary.
8) Check for tightness of bearing collars every 48
hours of operation.
9) Change gearbox oil once a year. Adjust to required
oil level as per drawing in Parts List section. Use
SAE 80W90 oil.
10) Check all nuts and bolts once a year. If necessary
use torque chart on page 43.
11) For the auger drive shaft, always use a grade 5
shear bolt.
12) For the PTO shaft, always use a grade 8.8 shear
bolt at 540 RPM.
13) UHMW slides do not require lubrification except
at the end of the season in order to prevent corro-
sion of steel components that are in contact with
the UHMW material.
6

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STORAGE
1) Store the Snowblower in a cool, dry place.
2) Support the Snowblower with wooden blocks.
3) Keep all piston rods in the retracted position. This
will assure better protection against the elements.
4) Clean your Snowblower.
5) Thoroughly inspect all parts of the Snowblower.
Replace or repair worn or defective parts.
6) Touch-up or repaint if necessary.
7) Lubricate all points before storage.
7

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TROUBLESHOOTING
- Follow lubrication
recommendations.
- Replace defective U-joints.
- Make sure the Snowblower inlet
face is perpendicular to the
ground and if possible readjust
3-point hitch in order to position
the Snowblower further away
from tractor.
- Use high quality lubricant.
- Avoid raising Snowblower while
in operation.
- Readjust 3-point hitch in order
to position the snowblower
closer to the tractor.
- Follow lubrication
recommendations.
- Replace defective telescopic
members.
- Clean and grease.
- Readjust 3-point hitch in order to
position the Snowblower further
away from tractor or shorten tu-
bes.
- Follow lubrication instructions.
- Adjust chain to prevent
interference between guard &
equipment.
- Replace worn or damaged
bearing rings.
- Eliminate any interference
between tubes and equipment or
tractor.
- Replace damaged tubes.
P.T.O. SHAFT
POSSIBLE CAUSEPROBLEM CORRECTION
- Insufficient lubrication.
- Excessive working angle.
- Poor quality lubricant.
- Too much sliding under load.
- Tube overlap too-short: minimum
recommended is 6".
- Insufficient lubrication.
- Contaminants (sand, etc.).
- Pin or orifice contaminated by
sand, ice, etc.
- Telescoping members too long,
exerting pressure on locking
device.
- Lack of lubrication.
- Wrong installation of guard
chain.
- Part of the guard in contact with
the equipment.
- Tubes in contact with the
equipment.
- Premature wear of U-joints and/
or bluish color of cross journals.
- Gripping or premature wear of
telescoping members.
- Damaged or jammed locking pin
or bolt.
- Premature wear of guard tube
bearing ring.
- Cut or deformed safety guard
tubes.
8

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TROUBLESHOOTING (cont'd)
- Raise P.T.O. speed to a minimum
of 540 RPM.
- Adjust impeller blades closer to
drum outlet (1/8" to 3/16").
- Reduce travel speed.
- Raise P.T.O. speed to a minimum
of 540 RPM.
- Make sure the Snowblower is
completely empty before
reducing RPM, especially on
tractors with foot controlled
RPM.
- Repare clutch.
- Reduce travel speed.
- Replace shear bolt.
- Replace shear bolt.
- Replace shear bolt.
- Fix or replace chain.
- Replace the key.
- Remove ice.
- Check hydraulic connections.
- Replace the key.
- Remove ice.
- Check hydraulic connections.
- Tractor RPM too low.
- Gap too wide between impeller
blade tip and drum outlet wall.
- Insuffucient tractor HP.
- Tractor RPM too low.
- Tractor RPM reduced too early
with snow still in the
Snowblower.
- Slippage of PTO clutch
mechanism.
- Wet snow condition.
- Shear bolt broken on drive shaft.
- Shear bolt broken on drive shaft.
- Shear bolt broken on auger drive
shaft.
- Broken drive chain.
- Broken key on motor.
- Ice accumulation.
- Wrong hydraulic connections.
- Broken key on motor.
- Ice accumulation.
- Wrong hydraulic connections.
- The snow is not being thrown as
far as usual.
- Frequent plugging of discharge
chute.
- The impeller will not turn.
- The auger will not turn.
- The rotating drum will not turn.
- The chute will not turn.
SNOWBLOWER
POSSIBLE CAUSEPROBLEM CORRECTION
8

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SPECIFICATIONS
9
P-540 P-620 P-680 P-720 P-720 P-720
-74 -80
--P-680 P-720 --
TRC TRC
Horse power recommended (HP) min.-max. 18 to 25 20 to 30 25 to 40 25 to 50 30 to 55 30 to 55
Working width in. - (cm) 54" 62" 68" 72" 74" 80"
Cutting height in. - (cm) 28" 28" 30" 30" 30" 30"
Height - Chute base po. - (cm) 293/8"29
3/8"31 1/4"31 1/4"33 1/4"33 1/4"
Height - Chute base, TRC model po.-(cm) - - 34 34 - -
Impeller diameter in. - (cm) 22" 22" 24" 24" 26" 26"
Depth of drum in. - (cm) 9" 9" 10½" 10½" 10½" 10½"
Impeller blades 444444
Size of impeller shaft in. - (cm) 1¼" 1¼" 19/16"1
9/16"1 9/16"1 9/16"
Height - Impeller center in. - (cm) 14" 14" 15" 15" 15" 15"
Impeller RPM 540 540 540 540 540 540
Number of augers 111111
Main auger diameter in. - (cm) 16" 16" 19" 19" 19" 19"
Drive chain - main auger 50 50 60 60 60 60
Oil bath sealed gear box Std. Std. Std. Std. Std. Std.
Chute rotation Manual Opt. Opt. Opt. Opt. Opt. Opt.
mechanism Hydraulic (motor) Opt. Opt. Opt. Opt. Opt. Opt.
Number of shear bolts 222222
Hitch category 111111
Balanced impeller Std. Std. Std. Std. Std. Std.
Balanced auger Std. Std. Std. Std. Std. Std.
Drum rotation for hydraulic motor - - - Std. - -
Scraper blade Std. steel - not rev. Std. Std. Std. Std. Std. Std.
Carbon steel 1/2" x 3" Opt. Opt. Opt. Opt. Opt. Opt.
Stainless steel 1/2" x 3" Opt. Opt. Opt. Opt. Opt. Opt.
Adjustable Standard steel Std. Std. Std. Std. Std. Std.
skid shoes Carbon steel Opt. Opt. Opt. Opt. Opt. Opt.
Stainless steel Opt. Opt. Opt. Opt. Opt. Opt.
Chute regular Opt. Opt. Opt. Opt. Opt. Opt.
semi-industrial Opt. Opt. Opt. Opt. Opt. Opt.
Déflecteur manual Opt. Opt. Opt. Opt. Opt. Opt.
hydraulic Opt. Opt. Opt. Opt. Opt. Opt.
Bearing / ductile iron casting Std. Std. Std. Std. Std. Std.
Lateral blades Opt. Opt. Opt. Opt. Opt. Opt.
P.T.O. shaft standard No. 2 No. 2 No. 4 No. 5 No. 5 No. 5
optional - - - No. 6 No. 6 No. 6
Poids lbs - kg 550 575 707 712 717 735
- - 790 808 - -
Design and specifications subject to change without notice.
Shaded lines apply only to models with rotary drum (TRC).
Snowblower model
Snowblower model
GROUP I

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SNOWBLOWERS P-540 P-620
10
170-04411R1

- 20 -
SNOWBLOWERS P-540 P-620 (cont'd)
10
1 140-01251 Scraper blade (not reversible) 3/8" x 2½" x 50¼" lg ............................................. 1 -
1 140-01261 Scraper blade (not reversible) 3/8" x 2½" x 58¼" lg ............................................. - 1
2 319-38310 Plow bolt 7/16" NC x 1½" lg + nut & lock washer ............................................... 5 6
3 110-05541 Skid shoe (right side) ......................................................................................... 1 1
4 8112 Lock pin 1/4" ................................................................................................... 2 2
5 140-03261 Skid shoes lock ................................................................................................ 2 2
6 300-40430 Bolt ½" NC x 3½" lg + nylon locknut ................................................................. 2 2
7 6520 Storage support ................................................................................................ 1 1
8 300-36550 Bolt 3/8" NC x 5½" lg + nylon locknut ................................................................... 4 4
9 6521 Storage support pin ........................................................................................... 1 1
10 6451 Gear box T281 ................................................................................................. 1 1
11 Std. Hitch pin clip 5/32" ........................................................................................... 4 4
12 6522 Adjustment plate for gear box + 4 nuts 3/8" NC .................................................. 1 1
13 140-20371 3-point side bar ................................................................................................ 2 2
14 110-36772 Right lower hitch .............................................................................................. 1 1
15 300-40460 Bolt ½" NC x 4" lg + nylon locknut .................................................................... 2 2
16 6253 Pin category 1 .................................................................................................. 2 2
17 6408-E P.T.O. shaft ..................................................................................................... 1 1
18 110-33871 Upper hitch ...................................................................................................... 1 1
19 6466 Splined adaptor 1¼"-19 .................................................................................... 1 1
20 6441 Auger drive shaft 20 7/8" lg overall (including no. 19 & 23) ................................... 1 -
20 6442 Auger drive shaft 24 7/8" lg overall (including no. 19 & 23) ................................... - 1
21 300-46370 Bolt 3/4" NC x 2 1/2" lg + nylon locknut ............................................................ 1 1
22 300-32340 Bolt 1/4" NC x 2" lg grade 5 + nylon locknut ...................................................... 1 1
23 150-01491 Welded bushing ¼" i.d. x 7/8" o.d. x ¾" lg ......................................................... 2 2
24 6287 Sprocket #50 + shearplate ................................................................................ 1 1
25 8009 Brass bushing 1¼" i.d. x 1½" o.d. x 1 3/16" lg ................................................... 2 2
26 Std. Grease fitting ¼"-28 straight .............................................................................. 5 5
27 UCFLD205-16 Bearing 1" + flange .......................................................................................... 3 3
28 190-01421 Chain #50 x 59 3/8" lg (95 links) ....................................................................... 1 1
28 26A50 Connecting ling no. 50 ...................................................................................... 1 1
28 59-50 Offset link no. 50 ............................................................................................. 1 1
29 110-04361 Skid shoe (left side) ........................................................................................... 1 1
30 120-03485 Frame P-540 .................................................................................................... 1 -
30 120-03505 Frame P-620 .................................................................................................... - 1
31 150-00462 Idler clevis pin .................................................................................................. 1 1
32 6604 Idler sprocket #50 ............................................................................................. 2 2
33 160-01612 Spacer ............................................................................................................. 2 2
34 110-01972 Idler ................................................................................................................11
35 110-01991 Threaded rod for idler adjustment + nut 7/16" NC ................................................ 1 1
36 110-01981 Threaded tube for idler adjustment ...................................................................... 1 1
37 6538 Compression spring ........................................................................................... 1 1
38 300-36250 Bolt 3/8" NC x 1" lg + nylon locknut .................................................................. 2 2
39 300-40280 Bolt 1/2" NC x 1 1/4" lg + nylon locknut thin + washer 7/16" .............................. 6 6
40 376-40000 Flat washer 1/2" ............................................................................................... 1 1
41 346-41000 Nylon locknut 1/2" NC thin ................................................................................ 1 1
42 Std. Roll pin 5/16" x 2" lg ........................................................................................ 4 4
43 110-21291 Chain guard cover ............................................................................................. 1 -
43 110-21301 Chain guard cover ............................................................................................. - 1
44 8374 Adjustable clamp fastener (welded) ..................................................................... 1 1
45 110-02233 Chain guard ...................................................................................................... 1 1
46 300-40340 Bolt 1/2" NC x 2" lg + nylon locknut .................................................................. 4 4
47 Std. Cotter pin 5/32" x 2" lg (2) ................................................................................ opt. opt.
48 6438 Chute adjusting rod (1) ...................................................................................... opt. opt.
49 6439 Chute adjusting tube (1) .................................................................................... opt. opt.
50 8112 Lock pin ¼" (1) ................................................................................................ opt. opt.
51 346-34000 Nylon locknut 5/16" NC (1) ................................................................................ opt. opt.
52 140-00881 Hoses mounting plate (1) ................................................................................... opt. opt.
53 110-01121 Mounting support plate (1) ................................................................................. opt. opt.
54 Std. Cotter pin 1/8" x 1" lg (1) .................................................................................. opt. opt.
55 FLD205 Flange ............................................................................................................. 3 3
56 UC205-16 Bearing 1" ....................................................................................................... 3 3
REF. PART # DESCRIPTION QTY
P-540
P-620