Hyster S50FT:
S50FT Overheating Issues

I've got a Hyster S50FT (S/N F187V22195K) equipped with the Mazda 2.2L LPG engine and Duramatch transmission that is having overheating issues. The lift runs fine most of the day but towards the end of the day it tends to rise in temperature and set off the powertrain protection system and shut the engine down. I have verified with a temp gun the engine temp is rising to the 250° mark that shuts down the engine so I don't believe its a bad temp sensor. The thermostat has been replaced, water pump replaced and verified to be moving water through the system. New head gasket relatively recently replaced. Radiator fins are cleared of debris and fan spins good. Even pulled the cat and checked the exhaust to make sure there were no clogs causing excessive heating there either. Any ideas on what would cause this overheating?
  • Posted 1 Jun 2024 06:27
  • Discussion started by BHF_SAF
  • Arizona, United States
Showing items 1 - 2 of 2 results.
Scott,

Did you find the problem? Will all that has been replaced and tested, have you noticed any leaks? Do you have to top off anti-freeze every couple of days? If cleaning the radiator does not work, make sure the proper mixture of anti-freeze is used. A new rad cap would not hurt. Let us know what fixed the problem.
  • Posted 11 Jun 2024 22:46
  • Reply by Fishmech
  • Virginia, United States
The hard to do we do right away. The impossible just takes a little longer.
Sounds like you checked alot l would pull radiator and send to radiator shop to check for correct flow it only takes about 20 % of core to clog to cause truck to run hot over a long period.
  • Posted 2 Jun 2024 08:20
  • Reply by Scott_
  • Pennsylvania, United States
Scott

Post your Reply

Forkliftaction.com accepts no responsibility for forum content and requires forum participants to adhere to the rules. Click here for more information.

Having trouble using the Discussion Forums? Contact us for help.

Crown CG33P5
Braeside, Melbourne, Victoria, Australia
Hire
UN Forklift FBR25NQC3
HANGZHOU, Zhejiang, China
New - Sale
Latest job alerts …
St. Louis, MO, United States
Johnston, IA, United States
Jefferson, WI, United States
Latest job alerts …
Johnston, IA, United States
Jefferson, WI, United States
St. Louis, MO, United States

PREMIUM business

Hyster
Hyster is a world-leading provider of forklift trucks and services in the materials handling industry.
Fact of the week
The Michelin Guide with its star rating system originated in France in 1900. The guide was created as a marketing tool to encourage more car travel and consequently increase the demand for tyres. It initially contained maps, tire repair instructions, and lists of restaurants, hotels, and mechanics.
Toyota 8FD45
Yokohama, Japan
Used - Sale
Aichi SR10C1SM
Yokohama, Japan
Used - Sale
Latest job alerts …
Johnston, IA, United States
Jefferson, WI, United States
St. Louis, MO, United States
Upcoming in the editorial calendar
WIRELESS CHARGING
Aug 2025
MANAGING MIXED FLEETS
Oct 2025