allen MP235 Application guide

OPERATIONS & PARTS MANUAL
MP235 RIDING TROWEL
REVISION: 05.2018| MANUAL PART #: 053383

053383; 11/10
This manual, or a copy of it, must be kept with the machine at all times.
There is a manual storage container located on the machine for your
convenience.

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053383; 11/10
Riding Trowel
OPERATIONS-PARTS MANUAL
Copyright © 2016 Allen Engineering Corporation
All rights reserved
All information, specifications, and illustrations in this manual are subject to change without notice and are based
on the latest information at the time of publication. No part of this manual may be reproduced or transmitted in any
form or by any means, electronics or mechanical, for any purpose, without the express written permission of Allen
Engineering Corporation (AEC). AEC assumes no responsibility or liability for any errors or inaccuracies that may
appear in this manual.
Allen®Products are covered under one or more of the following patent numbers:
U.S. Design Patents: 344,736; 400,542; 400,544; 402,998; 402,999; 403,332; 404,041; 404,042; 410,931;
413,127; 416,564; 465,897; 466,909; 474,203.
U.S. Utility Patents: 5,108,220; 5,238,323; 5,328,295; 5,352,063; 5,405,216; 5,476,342; 5,480,257; 5,480,258;
5,533,831; 5,562,361; 5,567,075; 5,613,801; 5,658,089; 5,685,667; 5,803,658; 5,816,739; 5,816,740; 5,890,833;
5,934,823; 5,967,696; 5,988,938; 5,988,939; 6,019,433; 6,019,545; 6,048,130; 6,053,660; 6,089,786; 6,106,193;
6,857,815; 5,288,166; 6,582,153 B1, 7,108,449; 7,114,876; 7,316,523; 7,690,864 B2
Canadian Patents: 2,039,893.
With other Patents Pending.
First Issue: December 2010
Amended: September 2016
August 2017
May 2018, MN 18-035, M. Wesley
May 2018, MN 18-040, M. Wesley
AEC Manual Part No.: 053383
Printed in U.S.A.
This manual covers the Riding Trowels listed below:
Part No. Description
053176 RIDER, MP235

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Limited Warranty
Allen Engineering Corporation (“Allen”) warrants its products to be free of defects in material or workmanship for:
TWO YEARS FROM END USER’S DATE OF PURCHASE
Warranty period begins on the date of purchase by the End User of the product. All warranty is based on the follow-
ing limited warranty terms and conditions, including the disclaimer of implied warranties and consequential damages.
1. Allen’s obligation and liability under this warranty is limited to repairing or replacing parts if, after Allen’s inspection,
there is determined to be a defect in material or workmanship. Allen reserves the choice to repair or replace.
2. If Allen chooses to replace the part, it will be at no cost to the customer and will be made available to the Allen
Distributor, Dealer, or Rental Center from whom the End User purchased the product.
3. Replacement or repair parts, installed in the product, are warranted only for the remainder of warranty period of the
product as though they were the original parts.
4. Allen does not warranty engines or batteries. Engine warranty claims should be made directly to an authorized
factory service center for the particular engine manufacturer. Batteries are not warranted due to unknown treatment
during transport, etc, and any battery claims should be directed to the battery manufacturer.
5. Allen’s warranty does not cover the normal maintenance of products or its components (such as engine tuneups
and oil & filter changes). The warranty also does not cover normal wear and tear items (such as belts and consum-
ables).
6. Allen’s warranty will be void if it is determined that the defect resulted from operator abuse, failure to perform nor-
mal maintenance on the product, modification to product, alterations or repairs made to the product without the writ-
ten approval of Allen. Allen specifically excludes from warranty any damage to any trowels resulting from an impact to
the rotors.
7. Impact damage to gear boxes is not covered under the Allen warranty and is deemed customer abuse.
8. Allen will pay shop labor on warranty items at the Allen Shop Labor Rate in existence on the date of the warranty
claim. An Allen labor chart will determine the time allowed to complete a repair and will govern the shop labor hours
that will be allowed.
9. Allen will pay freight on warranty replacement parts at worldwide standard ground rates. No warranty replacement
parts will be shipped air freight at the expense of Allen. Allen only pays outbound freight charges when sending war-
ranty replacement parts to the customer via ground service. Allen does not pay any inbound freight. However, if Allen
determines this to be a warranted item, only then will Allen reimburse the customer for inbound freight at standard
ground rates.
10. ALLEN ENGINEERING CORPORATION’S WARRANTY POLICY WILL NOT COVER THE FOLLOWING:
TAXES;
SHOP SUPPLIES; ENVIRONMENTAL SURCHARGES; AIR FREIGHT; TRAVEL TIME; LOSS OF TIME;
INCONVENIENCE; LOSS OF RENTAL REVENUE; RENTAL COSTS OF EQUIPMENT USED TO REPLACE THE
PRODUCT BEING REPAIRED;
LOSS OF USE OF THE PRODUCT; COMMERCIAL LOSS; OR ANY OTHER CHARGES WHATSOEVER OR ANY
LIABILITIES FOR DIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGE OR DELAY.
11. ALLEN ENGINEERING CORPORATION MAKES NO OTHER WARRANTY, EXPRESSED OR IMPLIED. THIS
LIMITED WARRANTY IS IN LIEU OF THE WARRANTY OF MERCHANTABILITY AND FITNESS. THERE ARE NO
OTHER WARRANTIES THAT EXTEND BEYOND THE DESCRIPTION ON THIS DOCUMENT.
12. No Allen employee or representative is authorized to change this warranty in any way or grant any other warranty
unless such change is made in writing and signed by an officer of Allen Engineering Corporation.

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Table of Contents
Sect No. Title Page
... Limited Warranty ............................................ii
... Information Contained In This Manual ............................v
... Dealer Information ...........................................vi
... Ordering Parts .............................................vii
... Model Number - Serial Number Codes ..........................viii
... Unit Identification ............................................ix
... Technical specifications .......................................x
... Engine Specifications ........................................xvi
... Machine Dimensional Specifications ............................xiii
... Sound And Vibration Specifications .............................xiv
1.0 Safety................................................... 1-1
... State Regulations .......................................... 1-2
... Federal Regulations ........................................ 1-3
1.1 General Safety Precautions .................................. 1-4
1.2 Spark Arrestor Notice....................................... 1-5
1.3 Operating Safety .......................................... 1-6
1.4 Engine Safety ............................................. 1-8
1.5 Servicing Safety ........................................... 1-9
1.6 Safety And Operation Labels ................................ 1-10
1.7 Pan Installation Insructions ................................. 1-??
2.0 Operations............................................... 2-1
2.1 Introduction............................................... 2-3
2.2 Start Up Procedures........................................ 2-4
2.3 Operating Instructions ...................................... 2-6
3.0 Service.................................................. 3-1
3.1 Periodic Maintenance....................................... 3-2
3.2 Trowel Gearbox ........................................... 3-3
3.3 Drive Belt ................................................ 3-4
3.4 Control Lever Adjustment.................................... 3-8
3.5 Right Hand Control Lever Adjust ............................. 3-10
3.6 Lift Lever Adjustment ...................................... 3-12
3.7 Transporting Trowel ....................................... 3-14
3.8 Battery Jump Start ........................................ 3-18

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4.0 Parts.................................................... 4-1
... Factory Service Information .................................. 4-2
... Replacement Part Procedure................................. 4-3
4.1 Seat Frame Assembly ...................................... 4-4
4.2 Mainframe Assembly ....................................... 4-6
4.3 Steering Assembly ......................................... 4-8
4.4 Spray System ............................................ 4-10
4.5 Pitch Control Assembly .................................... 4-12
4.6 Engine System Assembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-14
4.7 Driveline Assembly........................................ 4-16
4.8 Electrical Schematic ....................................... 4-18
4.9 Right Rotor Assembly (SOM)................................ 4-20
4.10 Left Rotor Assembly (SOM) ................................. 4-22
4.11 Right Spider Assembly..................................... 4-24
4.12 Left Spider Assembly ...................................... 4-26
4.13 Right Gearbox Assembly (SOM) ............................. 4-28
4.14 Left Gearbox Assembly (SOM) .............................. 4-30
4.15 Dolly Jack Assembly ...................................... 4-32
4.16 Pans and Lifting Bridle ..................................... 4-34
4.17 Tools................................................... 4-36
4.18 Gearbox Seal Kit ......................................... 4-38
Table of Contents, continued

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Information Contained in this
Manual
This manual provides information and procedures to safely operate and maintain the Allen
Machine.
For your own safety and protection from personal injury, carefully read, understand, and observe
the safety instructions described in this manual. Keep this manual or a copy of it with the machine
at all times.
Always operate this machine in accordance with the instructions described in this manual. A well
maintained piece of equipment will provide many years of trouble free operation.
This manual is divided into the following sections:
SECTION 1
SAFETY
SECTION 3
SERVICE
SECTION 2
OPERATIONS
Complete any warranty requirements as specified by the engine manufacturer in their instructions
found inside the manual box located on the back of the riding trowel operator’s seat.
Your engine and clutch is not manufactured by Allen Engineering Corporation, Inc, and therefore
is not covered under Allen Engineering Corporation, Inc warranty.
Your engine manufacturer should be contacted if you wish to purchase a parts manual or a repair
manual for your engine.
Refer to enclosed owners engine manual for complete O&M instructions. See your battery man-
ufacturer for battery warranty.
SECTION 4
PARTS

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Your Dealer has Allen Engineering Corporation trained mechanics and original Allen replacement
parts. Always contact the Allen Dealer who sold you this machine for Allen Certified repairs and
replacement parts.
Place Allen Dealer information below for future reference.
Dealer Information
Dealer Name: ______________________________________________________________
Phone #: (____) - ____ - ______________________________________________________
Address: _________________________________________________________________
City: ____________________________________ State:________ Zip:_____________
Salesman: _______________________________ Mobile Phone __________________
Additional Comments: _____________________________________________________
_________________________________________________________________________
_________________________________________________________________________
_________________________________________________________________________

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Section 4.0 contains illustrated parts lists for help in ordering replacement parts for your machine.
Follow the instructions below when ordering parts to insure prompt and accurate delivery:
1. All orders for service parts - include the serial number for the machine. Shipment
will be delayed if this information is not available.
2. Include correct description and part number from the “PARTS” section of this
manual.
3. Specify exact shipping instructions, including the preferred routing and complete
destination address.
4. DO NOT return parts to AEC without receiving written authorization from AEC. All
authorized returns must be shipped pre-paid.
5. When placing an order, please contact the AEC dealer nearest you.
All information, specifications, and
illustrations in this manual
are subject to change without notice and are based
on the latest information at the time of publication.
Ordering Parts

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Model Number - Serial Number Codes
Manufacturer’s Codes:
When ordering parts or requesting service information, you will always be asked to specify the
model and serial numbers of the machine. The legends below specifically defines each
significant character or group of characters of the Model Number and Serial Number codes.
Serial Number
The serial number found on the identification plate is a ten digit format. The model number
identifies your machine and will ensure that you receive the correct replacement parts.
235 06 08 010
Production Sequence
Model Number
MP 235
MODEL
Year Mfd
Month Mfd
Series/Model
SERIES