Gehl 1448 Plus Operator's Manual
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Gehl 1448 Plus Operator's Manual

Asphalt paver
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1448 Plus
Asphalt Paver
®
Form No.
Beginning with Serial Number 18101
918215
Revision C
04/07
Courtesy of Machine.Market

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  • Page 1 1448 Plus Asphalt Paver ® Form No. Beginning with Serial Number 18101 918215 Revision C 04/07 Courtesy of Machine.Market...
  • Page 2 Original Retail Purchaser to be free from defects in material and workmanship for a period of twelve (12) months from the Warranty Start Date. GEHL WARRANTY SERVICE INCLUDES: Genuine Gehl parts and labor costs required to repair or replace equipment at the selling dealer's business location. GEHL MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND,...
  • Page 3 INDICATOR AND OPERATION SYMBOLS Glow Plug Engine Start Engine Stop Electrical Power Glow Plug Indicator Engine Coolant Engine Oil Battery Charge Slow Fast Temperature Pressure Engine Rotational Sprayer Wand Diesel Fuel Sprayer On Sprayer Off Speed Read Operator’s Safety Accessory Hourmeter Horn Manual...
  • Page 4 NOTES Courtesy of Machine.Market...

  • Page 5: Table Of Contents

    TABLE OF CONTENTS Chapter 1 Introduction ..............5 Model/Serial Number Information .
  • Page 6 TABLE OF CONTENTS 1448 PLUS Feed Auger Control Levers ......... . . 29 Screed Platform Controls .
  • Page 7 1448 PLUS TABLE OF CONTENTS Chapter 8 Lubrication..............47 General Information .
  • Page 8 TABLE OF CONTENTS 1448 PLUS Replace Hydraulic Oil and Strainer ........61 Check Exhaust System.

  • Page 9: Introduction

    GEHL Company recommends that this manual be given to the new owner. If this machine was purchased "used," or if the owner's address has changed, please provide your GEHL dealer or GEHL Company Service Department with the owner's name and current address, along with the machine model and serial number.

  • Page 10: Model/Serial Number Information

    INTRODUCTION 1448 PLUS Model/Serial Number Information As a handy reference, record the purchase informa- tion, and the model and serial numbers in the fol- lowing spaces. Purchased from: ________________________ Date of Purchase: _______________________ Model No.: ____________________________ Serial No.: _____________________________ Fig. 1 - Serial Number Decal 918215/CP0407 Printed in U.S.A...

  • Page 11: Paver Controls/Components Identification

    1448 PLUS INTRODUCTION Paver Controls/Components Identification Fuel Filler Right Side Control Left Side Cleaner Control Levers Panel Control Levers Screed Adjust Screw (each side) Wash Down Wand and Tank Engine and Screed Hydraulic Pump Exhaust Hopper and Hopper Wings Muffler...
  • Page 12 INTRODUCTION 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 13: Specifications

    Chapter 2 SPECIFICATIONS DIMENSIONS, MEASURES AND WEIGHTS Overall Height (top of exhaust pipe) 6’11” (2108 mm) Minimum Width (transport) 8’5” (2565 mm) Maximum Width (operating) 10’9” (3277 mm) Length 7’4” (2235 mm) Truck Clearance (height from ground to 23” (584 mm) asphalt hopper floor) Weight (approximate) 7775 lbs.
  • Page 14 SPECIFICATIONS 1448 PLUS DRIVE CONFIGURATION Type Hydrostatic Track Type Self-adjusting, Steel Track Link Dimensions 12” x 3” (305 mm x 76 mm) Counter-Rotating Standard Track Length 43” (1092 mm) OPERATOR STATION Platform Single-span Controls Left and Right Sides Muffler w/Exhaust Diverter Valve...

  • Page 15: Checklists

    Chapter 3 CHECKLISTS Pre-Delivery I acknowledge that pre-delivery procedures were performed on this unit as outlined on this page. The following Checklist is an important reminder of ____________________________________________ valuable information and inspections that MUST be made before delivering the machine to the customer. Dealership’s Name Check off each item after the prescribed action is ____________________________________________...
  • Page 16 CHECKLISTS 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...
  • Page 17 CHECKLISTS Pre-Delivery I acknowledge that pre-delivery procedures were performed on this unit as outlined on this page. The following Checklist is an important reminder of ____________________________________________ valuable information and inspections that MUST be made before delivering the machine to the customer. Dealership’s Name Check off each item after the prescribed action is ____________________________________________...
  • Page 18 CHECKLISTS 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 19: Safety

    Gehl Company always takes operator’s safety into consideration during the design process. Guards MANDATORY SAFETY and shield are provided, protecting the operator SHUTDOWN PROCEDURE and bystanders from moving parts or other hazards.

  • Page 20: Pre-Operation Safety Reminders

    SAFETY (Continued) • It is essential that operators be thoroughly • Do not operate the paver in an enclosed area trained in the safe operation of the paver. Such without adequate ventilation. Internal training should be presented completely to all combustion engines deplete the oxygen supply new operators and not condensed for those within enclosed spaces and may create a...

  • Page 21: Screed Propane Heater Safety Reminders

    SAFETY (Continued) Screed Propane Heater Safety • Always wear safety glasses with side shields when striking metal against metal. In addition, Reminders it is recommended that a softer (chip-resistent) material be used to cushion the blow, such as a brass drift. Failure to follow could lead to WARNING serious injury to the eyes or other parts of the body.

  • Page 22: Modifications, Nameplates, Markings And Capacities

    Modifications, Nameplates, Markings and Capacities Modifications and additions that affect capacity or safe operation of the paver must not be performed without the prior written approval of the Gehl Company. Protective Guards and Warning Devices The paver is fitted with protective covers over the engine area in accordance with industry standards.

  • Page 23: Safety Decals

    SAFETY (Continued) Safety Decals L65927 072798 L5942 Printed in U.S.A 918215/CP0407 Courtesy of Machine.Market...
  • Page 24 SAFETY (Continued) P204101 P204100 P210200 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...
  • Page 25 SAFETY (Continued) L65924 137628 Printed in U.S.A 918215/CP0407 Courtesy of Machine.Market...
  • Page 26 SAFETY (Continued) NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 27: Indicators And Controls

    Chapter 5 INDICATORS AND CONTROLS Left Control Panel (backwall) Paver Front Right Control Panel (backwall) Horn Left Flow Gate Control 17 Hourmeter Left Travel Control 10 Right Flow Gate Control 18 Ignition Switch Right Travel Control 11 Left Screed Extension 19 Instrument Module Screed Vibrator Control 12 Right Screed Extension...

  • Page 28: Guards And Shields

    INDICATORS AND CONTROLS 1448 PLUS Indicator and Control CAUTION Descriptions (Refer to Fig. 3, page 23 for locations) Before operating the paver, become familiar with, and know how to use, all safety devices Ignition Keyswitch and controls. Know how to stop the paver before starting it —...

  • Page 29: Instrument Module

    1448 PLUS INDICATORS AND CONTROLS IMPORTANT: If the engine oil pressure ACC (Accessory) Position ( ): When the key is indicator activates during normal operation, rotated counter-clockwise one position from STOP the engine immediately. Loss of engine vertical. The paver accessory electrical circuit is oil pressure could be an indication of activated when the key is in this position.

  • Page 30: Horn

    INDICATORS AND CONTROLS 1448 PLUS Horn The exhaust diverter diverts engine exhaust. Pull the knob OUT to divert engine exhaust through the (Item 1, Fig. 3) screed. This heats up the bottom of the screed surface when paving. Push the knob IN to divert engine exhaust out through the muffler.

  • Page 31: Washdown Sprayer System

    1448 PLUS INDICATORS AND CONTROLS Washdown Sprayer System Hydraulic Fluid Reservoir Fill (Items 20 & 21, Fig. 3) (Item 22, Fig. 3) Washdown Reservoir Fill and Switch Fig. 14 - Hydraulic Fluid Reservoir Fill Remove the hydraulic reservoir fill plug to check Washdown the hydraulic fluid level or to add hydraulic fluid.

  • Page 32: Travel Controls

    INDICATORS AND CONTROLS 1448 PLUS Travel Controls These two levers control forward, rearward and turning travel. The travel levers are mechanically The travel controls are used to maneuver the paver linked together on both sides of the paver to around on the jobsite and for road travel. Decals on provide control from either side.

  • Page 33: Hopper Controls

    1448 PLUS INDICATORS AND CONTROLS Hopper Controls Screed Platform Controls HOPPER CONTROLS — LEFT SIDE SCREED CONTROLS — LEFT SIDE HOPPER CONTROLS — RIGHT SIDE SCREED CONTROLS — RIGHT SIDE Fig. 20 - Screed Platform Controls Fig. 19 - Hopper Controls...

  • Page 34: Screed Depth Adjustment

    INDICATORS AND CONTROLS 1448 PLUS Mat Crown Adjustment Move the levers forward to move the extensions inward, rearward to move the extensions outward. Screed Depth Adjustment Fig. 23 - Mat Crown Adjustment Fig. 21 - Screed Depth Adjustment Mat crown adjustment is controlled by moving the Screed depth adjustment is controlled with rod ends (C, Fig.

  • Page 35: Accessories

    Contact your area Gehl dealer for specifications and ordering information. NOTE: All accessories are field-installed unless otherwise noted. Information and parts for field installation of all accessories are provided by the factory or Gehl paver dealers. Printed in U.S.A 918215/CP0407 Courtesy of Machine.Market...
  • Page 36 INDICATORS AND CONTROLS 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 37: Maintenance

    Chapter 6 MAINTENANCE IMPORTANT: The Maintenance Interval Chart contains the main- Under extreme operating tenance intervals for the service procedures located conditions, more frequent maintenance than in “Service and Storage” on page 53. The “Mainte- the recommended intervals may be required. nance Log”...

  • Page 38: Maintenance Log

    MAINTENANCE 1448 PLUS Every 10 Every 50 Every Every Every SERVICE Hours Hours First 50 1000 PROCEDURE Hours Hours Hours Hours Daily) Weekly) (or Yearly) Change Engine Oil • and Filter • Check Torque Hubs Oil Level Change Fuel Filter •...
  • Page 39 1448 PLUS MAINTENANCE Date Hours Service Procedure Printed in U.S.A 918215/CP0407 Courtesy of Machine.Market...
  • Page 40 MAINTENANCE 1448 PLUS Date Hours Service Procedure 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 41: Operation

    Chapter 7 OPERATION GENERAL INFORMATION Complete the following steps to start the engine: 1. Turn the keyswitch to the STOP position. CAUTION 2. Set the throttle control to 1/3 open. NOTE: If starting a cold engine and the BEFORE starting the engine and operating the outside temperature is below 40°...

  • Page 42: First Time Operation

    OPERATION 1448 PLUS If the battery is discharged and cannot start the 5. Run the engine at a low, consistent speed for engine, either charge the battery or jump start the five minutes. Listen for any abnormal sounds paver. See “Jump-starting” on page 57.

  • Page 43: Screed Propane Heater Kit Operation (Option)

    1448 PLUS OPERATION IMPORTANT: Follow the manufacturer's If the paver needs repair, is unsafe, or contributes to an unsafe condition, inform the appropriate recommendations regarding the use of fuel, person immediately. Do not operate the machine lubricants and oil. until it is repaired or the unsafe condition is corrected.

  • Page 44: Paving At The Jobsite

    OPERATION 1448 PLUS • Hopper, augers, and underside of the screed • Push rollers • Hydraulic fluid reservoir • Asphalt depth adjustment screws • External track and sprockets • Any part of the paver that contacts asphalt WARNING Do NOT spray tracks before loading or unload- ing paver on a truck or trailer, because this could cause loss of traction.

  • Page 45: Filling The Hopper

    1448 PLUS OPERATION Filling the Hopper 2. Move the speed/travel control levers to the for- ward position. Adjust the speed control levers 1. Have the dump truck back up to the front of the to obtain the desired travel speed. Lay asphalt/...

  • Page 46: Precautions While Paving

    OPERATION 1448 PLUS NOTE: Leave a small head of asphalt at the If the hopper is loaded and the operator wants to close the flow gates (to transport material to an leading edge of the screed while waiting for area inaccessible to the truck, reposition the paver the next load of asphalt.

  • Page 47: Highway Travel

    1448 PLUS OPERATION when the windrow asphalt begins to run thin. If this is not the case, open both flow gates about 1/3 and maintain a full head of asphalt at the leading edge of the screed until it strikes the windrow asphalt.
  • Page 48 OPERATION 1448 PLUS Loading with Ramps 13. Lower the screed and place chains through the two tie-down points at the rear of the paver 1. Align the paver with the ramps so that the (Fig. 28). Drive the paver forward, allowing paver can load in reverse.

  • Page 49: Unloading With Ramps

    1448 PLUS OPERATION Unloading with Ramps WARNING ALWAYS place the pump speed control lever in "slow" position when operating the paver on the truck bed. ALWAYS unload the paver in "forward." Do not walk beside, behind or in front of the paver during unloading procedures.

  • Page 50: Towing For More Than One Block

    1. Remove the cover plate (two bolts) (Fig. 30). heavy, very high flash-point grease to prevent rusting. THEFT DETERRENTS Gehl Company has records of component and serial numbers. Complete the following to discourage vandalism, theft, and to help recovery if theft occurs: 1.

  • Page 51: Lubrication

    Chapter 8 LUBRICATION GENERAL INFORMATION Hydraulic Fluid Reservoir Use SUNVIS 846, or equivalent WARNING that contains anti-rust, anti-foam and antioxida- tion additives and conforms to ISO VG46. NEVER lubricate or service the paver when any part of the machine is in motion. ALWAYS exer- Capacity: cise the MANDATORY SAFETY SHUTDOWN 18 Gallons (68 Liters)

  • Page 52: Grease Fitting Locations

    LUBRICATION 1448 PLUS GREASE FITTING LOCATIONS Engine Every 50 Hours (or weekly): Oil Filter Element Gehl P/N 137500 Fuel Filter Element Gehl P/N 182130 1. Grease depth adjustment screws (2 each) 2. Grease track adjuster yokes (8 per track) Hydraulic System Filters 3.

  • Page 53: Schematics

    Chapter 9 SCHEMATICS This chapter contains hydraulic and electrical sche- matics. HYDRAULIC SCHEMATIC Use the hydraulic schematic for valves, pumps, motors, cylinders, and as a guide for troubleshooting and service reference. See “Hydraulic Schematic” on page 51. ELECTRICAL SCHEMATIC Use the electrical schematic for instrumentation, components, switch connections, and as a guide for troubleshooting and service reference.

  • Page 54: Electrical Schematic

    SCHEMATICS 1448 PLUS Electrical Schematic Fig. 33 - Electrical Schematic 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 55: Hydraulic Schematic

    1448 PLUS SCHEMATICS Hydraulic Schematic Fig. 34 - Hydraulic Schematic Printed in U.S.A 918215/CP0407 Courtesy of Machine.Market...
  • Page 56 SCHEMATICS 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 57: Service And Storage

    Dealers know the components reference. See “Electrical Schematic” on page 50. covered under the terms of the Gehl Warranty and the components covered under the terms of vendor warranties. IMPORTANT:...

  • Page 58: Operator Services

    NEVER cut Use only genuine Gehl replacement service parts. or weld on fuel lines or tanks. Be sure not to damage polished surfaces. Clean or...

  • Page 59: Check Fuel Tank Level

    1448 PLUS SERVICE AND STORAGE Check Radiator Coolant Level WARNING WARNING Do not spray releasing agent into tracks before loading or unloading the paver on a truck or DO NOT remove the radiator cap when the trailer, because this could cause loss of engine is running hot or overheated.

  • Page 60: Service Every 50 Hours Or Weekly

    Check Fan Belt If the belt is worn, cut, cracked, or damaged, it should be replaced. Order a replacement belt from your Gehl dealer. Refer to the engine manual to learn proper belt replacement and tension adjustment procedures. Check Hydraulic Oil Level The fluid must be cool when checking the reservoir level (Fig.
  • Page 61 1448 PLUS SERVICE AND STORAGE WARNING WARNING Explosive gas is produced while a battery is in The ONLY safe method for jump-starting a use or being charged. Keep flames or sparks discharged battery is for TWO PEOPLE to away from the battery area. Be sure battery is perform the following procedure.

  • Page 62: Air Cleaner Element Maintenance

    SERVICE AND STORAGE 1448 PLUS NOTE: Twist the jumper cable clamps on the 6. Re-install the air cleaner cover (2) on the housing and secure with latches (1). battery terminals to ensure a good electrical connection. 6. Start the paver. If it does not start immediately, start the jumper vehicle to avoid excessive drain on the booster battery.

  • Page 63: Change Hydraulic Filter

    1448 PLUS SERVICE AND STORAGE Change Hydraulic Filter 4. Wipe the sealing surface on the mounting head (3) with a clean cloth. 1. Perform the Mandatory Safety Shutdown procedure on page 15. 5. Apply a thin coat of clean oil to the new oil filter gasket.

  • Page 64: Check Torque Hub Oil Level

    SERVICE AND STORAGE 1448 PLUS NOTE: SERVICE EVERY 500 HOURS Use only genuine OEM engine replacement filters. Along with all service checks in this section, also complete the service checks in “Service Every 10 8. Apply a thin coat of clean oil to the gasket on Hours or Daily”...

  • Page 65: Service Every 1000 Hours

    1448 PLUS SERVICE AND STORAGE 3. Using a filter wrench, unscrew the fuel filter 3. Remove the radiator drain plug and drain the (2). Hold the bottom of the fuel filter with a coolant into a suitable container. After all piece of rag to prevent the fuel from dripping.

  • Page 66: Check Exhaust System

    SERVICE AND STORAGE 1448 PLUS solvent, dry with a towel, and coat it with fresh 3. Locate neutral linkage (Fig. 43) underneath the hydraulic oil. console, against the backwall, behind the hydraulic pump.. 4. Flush out the bottom of the reservoir with clean hydraulic oil.

  • Page 67: During Storage

    1448 PLUS SERVICE AND STORAGE 4. Apply grease to all exposed hydraulic cylinder rod areas. 5. Add stabilizer to fuel per fuel supplier's recommendation. 6. Disconnect the battery cable clamps and cover or remove the battery from the paver and store it separately.
  • Page 68 SERVICE AND STORAGE 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 69: Troubleshooting

    If a problem occurs, do not overlook simple causes. repair major components unless authorized to For example, an engine failing to start could be do so by your Gehl dealer. Unauthorized caused by an empty fuel tank. After a mechanical repairs may void the Warranty.

  • Page 70: General Paver Problems During Operation

    TROUBLESHOOTING 1448 PLUS GENERAL PAVER PROBLEMS DURING OPERATION Problem Possible Cause Corrective Action Engine operation erratic See “Engine” on page 65 Paver difficult to steer One forward/reverse lever not fully Engage lever (normal lead off to one side engaged may be as much as 1 to 2 ft.

  • Page 71: Material-Delivery, Compaction-Related Mat Problems

    1448 PLUS TROUBLESHOOTING Problem Possible Cause Corrective Action Mat texture not uniform See Causes 1, 2, 4, 7-9, 12 Screed marks See Cause 3 Screed not responding to See Causes 2-4 correction Poor pre-compaction See Cause 2, 4 Poor longitudinal joint 13.

  • Page 72: Drive And Main Control Valves

    TROUBLESHOOTING 1448 PLUS Problem Possible Cause Corrective Action Transverse cracking See Causes 1-4, 6 (checking) Mat shoving under roller See Causes 1-4, 6, 9, 13 Bleeding or fat spots in mat See Causes 3, 4, 6, 13 Roller marks See Causes 1, 2, 6, 9, 10...

  • Page 73: Hydraulic Pump And Motor System

    1448 PLUS TROUBLESHOOTING HYDRAULIC PUMP AND MOTOR SYSTEM Problem Possible Cause Corrective Action System will not operate in 1. Oil supply low Check oil level and fill either direction 2. Oil filters clogged Replace filter 3. Oil too heavy Use proper viscosity oil 4.
  • Page 74 TROUBLESHOOTING 1448 PLUS Problem Possible Cause Corrective Action Starter will not turn Faulty relay Replace Control module fuse blown Replace Circuit breaker tripped Reset Ignition is in OFF or RUN position Turn ignition to START position Speed control not in NEUTRAL START...
  • Page 75 1448 PLUS TROUBLESHOOTING NOTES Printed in U.S.A 918215/CP0407 Courtesy of Machine.Market...
  • Page 76 TROUBLESHOOTING 1448 PLUS 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 77: Decal Locations

    6 (12.8 oz. Spray Cans) Charcoal Gray (GEHL) description and quantity of each decal provided in the kit. Refer to the illustrations for appropriate The decal kit for the model 1448 Plus Paver is replacement locations. listed below: To ensure proper selection of the correct replace- Ref.
  • Page 78 DECAL LOCATIONS 1448 PLUS 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...
  • Page 79 1448 PLUS DECAL LOCATIONS Printed in U.S.A 918215/CP0407 Courtesy of Machine.Market...
  • Page 80 DECAL LOCATIONS 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 81: Index

    Performance Specifications ... 10 GEHL Dealer Service Network ..6 Safety ......15 Schematics .
  • Page 82 INDEX 1448 PLUS NOTES 918215/CP0407 Printed in U.S.A Courtesy of Machine.Market...

  • Page 83: Torque Specifications

    TORQUE SPECIFICATIONS Use these torque values when tightening hardware (excluding locknuts, and self-tapping, thread-forming, and sheet metal screws) unless otherwise specified. UNIFIED GRADE 2 GRADE 5 GRADE 8 NATIONAL THREAD LUBED LUBED LUBED 8-32 8-36 10-24 10-32 1/4-20 1/4-28 5/16-18 5/16-24 3/8-16 3/8-24...
  • Page 84 State of California to cause cancer and birth defects and other reproductive harm. Wash hands after handling battery. ® Gehl Company 143 Water Street, P.O. Box 179, West Bend, WI 53095-0179 U.S.A. www.gehl.com 918215/CP0407 © 2007 GEHL Company. All rights reserved.

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