SPECIFICATIONS

Four (4) Ton Vibratory Asphalt Drum Roller

The purpose and intent of these minimum specifications is to describe a Four (4) ton vibratory asphalt dual drum roller. It must be of heavy duty design to deliver dependable service under severe operating conditions. Unit bid shall be currently produced with all the latest standard features whether or not called for in these specifications.

Item 1 Engine/ Power train

1.1 The heavy duty four cylinder diesel engine shall have a rated 42hp gross power at 2450 rpm.

1.2 The engine shall meet all the latest US EPA engine emission requirements.

1.3 Shall include an efficient dry type air filter with visible air restriction meter.

1.4 Shall have ample capacity for continuous high engine output under extreme temperatures and or operating conditions.

1.5 Coolant shall come rated for -30° degrees.

1.6 The engine shall utilize a pre-heat feature to assist starting in cool weather.

1.7 The engine speed shall be controlled by a three-position throttle lever, consisting of low, intermediate, and high.

1.8 The propulsion system shall be hydrostatically driven closed circuit with a single lever control for direction and speed.

1.9 The propel speed shall be infinitely variable from 0 to 8 mph in both forward and reverse.

1.10 The hydraulic propulsion lever’s regulating curve shall provide smooth and precise control at all speeds.

1.11 Provisions for bypassing (releasing) the hydraulic brake system, to allow the unit to be towed in the event of engine or hydraulic failure shall be supplied.

1.12 Electrical hour meter (Hobbs preferred) wired in such a way to operate only when the engine is running.

1.13 Engine compartment shall be enclosed and vandal proof.

1.14 Engine shall have spin on type filters for oil, coolant, and fuel.

1.15 Fuel cap shall be lockable type.

Item 2 Vibratory System

2.2 The vibratory system shall provide a minimum of two frequencies of 48 Hz (2,880 vpm) and 53 Hz (3,180 vpm) with an amplitude of 0.50 mm (0.020”).

2.3 Frequency selection shall correspond to the intermediate speed and high speed throttle positions.

2.4 The centrifugal force shall not be less than 29.5 kN (6,638 lb.)

2.5 A standard auto-vibe function shall start and stop the drum vibration when the propel lever is removed from the neutral position.

2.6 The standard auto-vibe system shall prevent the machine from being started when the vibratory switch is in the active mode.

2.7 The vibratory system shall include a vibration delay on the rear drum. This feature shall control the start of the rear drum in order to assist power management on slopes.

2.8 A vibratory selection switch shall provide vibratory capability on the front, rear or both drums or no vibratory action.

Item 3 Operators Station

3.1 The machine shall be equipped with a operator’s station located in such a way as to have the operator have a full 360 degree view.

3.2 The operators station shall providing visibility to the drum edge contact points on both side of the roller.

3.3 The operator’s station shall be isolated from vibration to include seat, feet and hands.

3.4 The operators station shall come with a ROPS that is ANSI and OSHA approved and certified.

3.5 The following shall be located within ease of reach to operator for safety and control: steering wheel, engine throttle, hour meter, water system control, vibratory drum control, horn, engine start switch, and secondary / parking brake.

3.6 Condition indicators shall include as minimum: fuel level, engine coolant temperature, engine oil pressure, hydraulic oil temperature, engine preheat, turn signals, brake “on” and battery charge.

3.7 Operator’s platform shall include a fully adjustable suspension seat with seat belt and seat switch for safety and comfort, skid-resistant walkway surfaces, railings and hand holds.

3.8 The control console shall be protected with a lockable cover.

3.9 Warning decals shall be conspicuously displayed

3.10 A neutral-start safety switch is mandatory.

Item 4 Hydraulic System

4.1 The hydraulic reservoir shall be common to propulsion, vibration and steering systems.

4.2 Hydraulic pressure checkpoints with quick-disconnect pressure taps shall be provided on propel and vibratory circuits.

4.3 The hydraulic oil system shall have sample ports for collection of oil fluids.

4.4 The hydraulic system shall have spin on type filters and lockable filler cap.

Item 5 Electrical System

5.1 Shall be 12-volt and include a master disconnect switch located in the lockable engine compartment installed on the positive (+) side.

5.2 The electrical supply shall be provided by a minimum 750 cold-cranking amp, maintenance free battery.

5.3 The electrical system shall have a 45 amp alternator minimum.

Item 6 Drums

6.1 The drums shall not be less than 27” in diameter.

6.2 The drum shell width shall be a minimum of 49” and have a minimum thickness of .6” (15 mm).

6.3 The drum and its vibrating parts shall be isolated from the rest of the roller by replaceable rubber supports.

6.4 Two flexible, spring loaded, self-adjustable non-metallic drum scrapers for each drum shall be mounted on the frame structure that surrounds the drums.

Item 7 Water Spray System

7.1 A minimum 75 gal. (300 L) high-capacity polyethylene water tank shall be enclosed within the machine frame.

7.2 A large water tank fill and drain shall allow the system to be filled or drained within minutes.

7.3 The standard pressurized water spray system shall be capable of constant or intermittent spray capabilities.

7.4 The extended life water pump and filters shall be conveniently located for easy access while providing optimum spray and flow.

7.5 The water spray system shall be equipped with triple filtration that reduces machine downtime caused by system clogs. A filter in the tank fill spout, and in-line filter at the water pump and filers in each spray nozzle shall provide filtration.

7.6 The spray nozzles shall include a drop-stop feature and be removable without the need for tools.

7.7 The water spray bars shall be constructed of stainless steel for corrosion resistance.

7.8 The water tank shall be constructed of reinforced polyethylene.

Item 8 Serviceability

8.1 Remote mounted drains shall be provided for the engine oil, hydraulic oil and coolant.

8.2 The hydraulic oil level shall be checked with a sight gauge.

8.3 The engine oil level shall be checked with a dip stick and the fuel system water separator shall be checked visually.

Item 9 Warranty 9.1 Manufactures standard warranty will apply.

9.2 Please state terms and conditions of warranty with bid proposal.

9.3 Manufactures warranty will start with the in-service date.

9.4 Manufacturer shall offer an extended warrantee if available.

Item 10 General

10.1 The self-propelled vibratory compactor shall be specifically designed for the compaction of asphalt and other select granular materials.

10.2 The front and rear frame pivot shall allow at least +/- 10° degrees of oscillation from horizontal.

10.3 Grade 10 metric or US Grade 8 hardware shall be used.

10.4 Operating weight shall be a minimum of 4090 kg (9,000 lb) including 80 kg (176 lb) operator, full fuel tank, full hydraulic system, half full water tank and standard ROPS.

10.5 Two (2) complete parts manuals per unit shall be supplied (CD’s are ok).

10.6 Two (2) complete service manuals per unit shall be supplied (CD’s are ok).

10.7 Two (2) operator’s manuals per unit shall be supplied (CD’s are ok).

10.8 Two ignition keys shall be supplied.

10.9 Bidders shall supply a specification sheet with their bid proposals.

10.10 Exceptions to specifications shall be listed on a separate paper and noted as exceptions and submitted with bid proposal.

10.11 If exceptions are not listed as such it shall be considered that the vendor will comply with all specifications as listed.

10.12 All bid pricing to include shipping and delivery to:

Maine DOT Fleet Service, 105 Capitol St. Augusta Me. 04330.

10.13 Maine DOT reserves the right to pre-inspect the equipment before delivery.

10.14 Upon delivery of unit or units all necessary paper work such as Certificate of Origin (title), dealer’s certificate, and invoices shall accompany unit or units.

10.15 Vendor may be asked to provide training at a later date, but within eight (8) weeks of delivery.

10.16 Be it known that these specifications are a minimum and that bids will be evaluated based on price, warranty, manufacturers performance data, delivery schedule, parts availability and other items deemed appropriate.

If you have a question regarding this RFQ, you must submit your questions thru the Question and Answer link on the Solicitation Details View page. Your answer will appear there as well. It is the vendor’s responsibility to log in to view all questions and answers posted there. Questions and Answers obtained any other way will not be valid for this RFQ.

PAYMENT METHOD: The State of Maine reserves the right to pay for goods purchased through this solicitation by any of several available means, which include but may not be limited to check, EFT, and/or procurement card. Bidders are advised that state statute precludes sellers from imposing a surcharge on credit or debit card purchases (text follows).

9-A MRSA §8-303 (2): A seller in a sales transaction may not impose a surcharge on a cardholder who elects to use a credit card or debit card in lieu of payment by cash, check or similar means.

Rev 2/11 esb.